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Lesson 3.1.1, lesson 3.1.2, lesson 3.1.3, lesson 3.1.4, lesson 3.1.5, lesson 3.1.6, lesson 3.2.1, lesson 3.2.2, lesson 3.2.3, lesson 3.2.4.

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Go Math Answer Key

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies

Go Math Grade 1 Chapter 3 Answer Key Pdf: Students of First Grade can keep a track of their preparation level using the Go Math Grade 1 Answer Key Chapter 3 Addition Strategies. By Solving Problems from the Go Math Grade 1 Ch 3 Answers you can enhance your fundamentals both at Chapter Level and Lesson Level. The HMH Go Math Grade 1 Answer Key Chapter 3 Addition Strategies covers questions belonging to Lessons, Assessments, Homework & Practice, Review Tests, etc. You can download the First Grade Go Math Chapter 3 Answer Key and access the preparation material no matter whichever corner you are preparing.

Addition Strategies Go Math Grade 1 Chapter 3 Answer Key Pdf

To become proficient in the Concepts of Go Math Grade 1 Chapter 3 Addition Strategies all you need to do is be thorough with the concepts and solve the various questions from it. Access the Topicwise HMH Go Math Grade 1 Ch 3 Addition Strategies Solution Key by simply clicking on the direct links available. Enhance your conceptual knowledge taking the help of these quick resources and become a pro in the subject.

Addition Strategies

  • Addition Strategies Show What You Know – Page 128
  • Addition Strategies Vocabulary Builder – Page 129
  • Addition Strategies Game: Ducky Sums – Page 130
  • Addition Strategies Vocabulary Game – Page(130A-130B) 

Lesson: 1 Algebra • Add in Any Order

  • Lesson 3.1 Algebra • Add in Any Order – Page(131-136)
  • Algebra • Add in Any Order Homework & Practice 3.1 – Page(135-136)

Lesson: 2 Count On

  • Lesson 3.2 Count On – Page(137-142)
  • Count On Homework & Practice 3.2 – Page(141-142)

Lesson: 3 Add Doubles

  • Lesson 3.3 Add Doubles – Page(143-148)
  • Add Doubles Homework & Practice 3.3 – Page(147-148)

Lesson: 4 Use Doubles to Add

  • Lesson 3.4 Use Doubles to Add -Page(149-154)
  • Use Doubles to Add Homework & Practice 3.4 – Page(153-154)

Lesson: 5 Doubles Plus 1 and Doubles Minus 1

  • Lesson 3.5 Doubles Plus 1 and Doubles Minus 1 – Page(155-160)
  • Doubles Plus 1 and Doubles Minus 1 Homework & Practice 3.5 – Page(159-160)

Lesson: 6 Practice the Strategies

  • Lesson 3.6 Practice the Strategies – Page(161-166)
  • Practice the Strategies Homework & Practice 3.6 – Page(165-166)

Mid-Chapter Checkpoint

  • Addition Strategies Mid-Chapter Checkpoint – Page 164

Lesson: 7 Add 10 and More

  • Lesson 3.7 Add 10 and More – Page(167-172)
  • Add 10 and More Homework & Practice 3.7 – Page(171-172)

Lesson: 8 Make a 10 to Add

  • Lesson 3.8 Make a 10 to Add – Page(173-178)
  • Make a 10 to Add Homework & Practice 3.8 – Page(177-178)

Lesson: 9 Use Make a 10 to Add

  • Lesson 3.9 Use Make a 10 to Add – Page(179-184)
  • Use Make a 10 to Add Homework & Practice 3.9 – Page(183-184)

Lesson: 10 Algebra • Add 3 Numbers

  • Lesson 3.10 Algebra • Add 3 Numbers – Page(185-190)
  • Algebra • Add 3 Numbers Homework & Practice 3.10 – Page(189-190)

Lesson: 11 Algebra • Add 3 Numbers

  • Lesson 3.11 Algebra • Add 3 Numbers – Page(191-196)
  • Algebra • Add 3 Numbers Homework & practice 3.11 – Page(195-196)

Lesson: 12 Problem Solving • Use Addition Strategies

  • Lesson 3.12 Problem Solving • Use Addition Strategies – Page(197-202)
  • Problem Solving • Use Addition Strategies Homework & Practice 3.12 – Page(201-202)
  • Addition Strategies Chapter 3 Review/Test – Page(203-206)

Curious George

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 1

Addition Strategies Show What You Know

Model Addition

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 2

2         +           3         =                 5

Therefore, there are 5 in total

Use Symbols to Add Use the picture. Write the addition sentence.

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 4

Answer: 2 + 4 = 6

Explanation:

The number of red bugs =  2

The number of green bugs = 4

Total : 2 + 4 = 6

Therefore, the total number of bug pictures are 6.

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 5

The number of purple butterflies = 3

The number of orange butterflies = 1

Total butterflies : 3 + 1 = 4

Therefore, there are 4 butterflies

Add in Any Order

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 6

Total : 1 + 4 = 5

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 9

Total : 4 + 1 = 5

Addition Strategies Vocabulary Builder

Visualize It Write the addends and the sum for the addition sentence

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 10

Understand Vocabulary Use a review word to complete the sentence.

Question 1. 4 and 3 in 4 + 3 = 7 are ___

In 4 + 3 = 7 , 4 and 3 are addends.

Question 2. 4 + 3 = 7 is an ___

4 + 3 = 7 is an Addition sentence.

Question 3. 4 cubes and 3 cubes are put together to __ the groups.

4 cubes and 3 cubes are put together to 7 the groups.

Addition Strategies Game: Ducky Sums

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 11

Addition Strategies Vocabulary Game

Going Places with GOMATH! words

Concentration

Materials 2 sets of word cards How to Play Play with a partner.

  • Mix the cards. Put the cards in rows blank side up.
  • If the words match, keep the pair of cards.
  • If the words do not match, turn the cards blank side up again.
  • The other player takes a turn.
  • Find all the pairs. The player with more pairs wins.

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 16.2

The Write Way

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 16.3

Lesson 3.1 Algebra • Add in Any Order

Essential Question What happens if you change the order of the addends when you add?

Listen and Draw

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 16.4

Answer: Addition sentence : 7 + 8 = 15

=   1               2            3            4              5             6             7            8           9           10          11         12        13           14          15

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 18

Answer: Addition sentence ( changing the order )  : 8 + 7 = 15

= 1               2            3            4              5             6             7            8           9           10          11         12        13           14          15

Math Talk MATHEMATICAL PRACTICES

Describe how knowing the fact 7 + 8 helps you find 8 + 7.

Model and Draw

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 20

Answer: 5 + 6 = 11 Fact : Even after changing the order of addends , the sum is same .

Share and Show MATH BOARD

Add. Change the order of the addends. Add again.

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 22

Answer: 8 + 9 = 17 Addition sentence after changing the order of addends = 9 + 8 = 17

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 23

Answer: 6 + 7 = 1 3 Addition sentence after changing the order of addends = 7 + 6 = 13

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 24

Answer: 7 + 5 = 12 Addition sentence after changing the order of addends = 5 + 7 = 12

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 25

Answer: 2 + 8 = 10 Addition sentence after changing the order of addends = 8 + 2 = 10

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 26

Answer: 9 + 2 = 11 Addition sentence after changing the order of addends = 2 + 9 = 11

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 27

Answer: 8 + 4 = 12 Addition sentence after changing the order of addends = 4 + 8 = 12

On Your Own

MATHEMATICAL PRACTICE Attend to Precision Add. Change the order of the addends. Add again.

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 28

Answer: 9 + 6 = 15 Addition sentence after changing the order of addends = 6 + 9 = 15

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 29

Answer: 0 + 6 = 6 Addition sentence after changing the order of addends = 6 + 0 = 6

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 30

Answer: 8 + 3 = 11 Addition sentence after changing the order of addends = 3 + 8 = 11

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 31

Answer: 5 + 9 = 14 Addition sentence after changing the order of addends = 9 + 5 = 14

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 32

Answer: 4 +5 = 9 Addition sentence after changing the order of addends = 5 + 4 = 9

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 33

Answer: 8 + 5 = 13 Addition sentence after changing the order of addends = 5 + 8 = 13

Question 13. THINK SMARTER Nina uses the number sentence 3 + 7 = 10 to tell about her toy trucks. What other number sentence could Nina write to tell about her trucks using the same addends? __ = __ + __

Answer: Given, Addition sentence : 3 + 7 = 10 Other Addition sentence : 10 = 7 + 3

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 34

Answer: Given , Addition sentence = 4 + 7 = 11 Other addition fact : 7 + 5 = 11

Problem Solving • Applications WRITE Math

Write two additional sentences you can use to solve the problem. Write the answer.

Question 15. Roy sees 4 big fish and 9 small fish. How many fish does Roy see? __ fish __ + __ = __ __ + __ = __

Explanation: Given, Number of big fishes = 4 Number of small fishes = 9 Total number of fishes = 4 + 9 = 13 Therefore, Roy sees 13 fishes Addition sentences: 4 + 9 = 1 3 9 + 3 = 13

Question 16. THINK SMARTER Justin has 6 toys. He gets 8 more toys. How many toys does he have now? __ toys __ + __ = __ __ + __ = __

Explanation: Given, Justin has 6 toys. Number of toys he gets more = 8 Total : 6 + 8 = 14 Therefore, the total number of toys = 14 Addition sentences: 6 + 8 = 14 8 + 6 = 14

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 35

Answer: 5 + 5 = 10

Explanation : Given, Anna has 2 groups of pennies and also total number of pennies = 10 The addition sentence can be written with same addends as 5 + 5 = 10

Question 18. THINK SMARTER Write the addends in a different order. 3 + 4 = 7 __ + __ = 7

Answer: 4 + 3 = 7

TAKE HOME ACTIVITY • Ask your child to explain what happens to the sum when you change the order of the addends.

Algebra • Add in Any Order Homework & Practice 3.1

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 36

Answer: 7 + 3 =10 3 + 7 = 10

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 37

Answer: 4 + 7 = 11 7 + 4 = 11

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 38

Answer: 9 + 8 = 17 8 + 9 = 17

Problem Solving

Write two additional sentences you can use to solve the problem.

Question 4. Camila has 5 shells. Then she finds 4 more shells. How many shells does she have now? __ + __ = __ __ + __ = __

Explanation : Given that, The number of shells Camila have = 5 The number of shells she finds more = 4 Total: 5+4= 9 Therefore, the number of shells she have now = 9 Addition sentences : 5 + 4 = 9 4 + 5 = 9

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 39

13 can be shown as the sum of 6 and 7 6 + 7 = 13

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 42

Lesson Check

Question 1. What is another way to write 7 + 6 = 13? 6 + 7 = __

Answer: 6 + 7 = 13

Grade 1 Go Math Chapter 3 Lesson 1 Answer Key Question 2. What is another way to write 6 + 8 = 14? 8 + 6 = __

Answer: 8 + 6 = 14

Spiral Review

Question 3. What is the sum? Write the number.

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 40

Question 4. How many nests are there? Write the number. 2 nests and 1 more nest __ nests

Explanation : 2 + 1 = 3 Therefore, the total number of nests = 3

Lesson 3.2 Count On

Essential Question How do you count on 1, 2, or 3?

Start at 9. How can you count on to add? Add 1.

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 41

Add 1.  9 + 1 =10 Add 2.  9 + 2 = 11 Add 3.  9 + 3 = 12

Math Talk MATHEMATICAL PRACTICES Analyze How is counting on 2 like adding 2?

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 43

Answer: Greater addend : 6 6 + 2 = 8

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 44

Answer: Greater addend : 6 6 + 3 = 9

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 45

Answer: Greater addend = 6 6 + 1 = 7

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 46

Answer: Greater addend  : 7 7 + 1 = 8

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 47

Answer: Greater addend = 7 7 + 2 = 9

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 48

Answer: Greater addend : 7 7 + 3 = 10

MATHEMATICAL PRACTICE Circle the greater addend. Count on to find the sum.

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 49

Answer: Greater addend : 9 1 + 9 = 10

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 50

Answer: Greater addend  : 8 3 + 8 = 11

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 51

Answer: Greater addend : 8 1 + 8 = 9

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 52

Answer: Greater addend : 6 1 + 6 = 7

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 53

Answer : Greater addend : 9 9 + 3 =12

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 54

Answer: Greater addend : 7 7 + 2 = 9

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 55

Answer: Greater addend : 6 2 + 6 = 8

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 56

Answer: Greater addend : 5 + 3 = 8

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 57

Answer: Greater addend : 7 7 + 1 = 8

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 58

Answer: Greater addend = 7 3 + 7 =10

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 59

Answer: Greater addend : 9 9 + 2 = 11

Go Math Grade 1 Answer Key Chapter 3 Addition Strategies 60

Answer: Greater addend : 4 3 + 4 = 7

Question 19. GO DEEPER Adam has 6 hats. Molly has 3 hats. They stack all their hats. Then Blake puts 2 more hats on the stack. How many hats are on the stack? __ + __ = ___ hats __ + __ = ___ hats

Answer: 6 + 3 = 9 9 + 2 = 11

Question 20. MATHEMATICAL PRACTICE Explain Terry added 3 and 7. He got a sum of 9. His answer is not correct. Describe how Terry can find the correct sum. _______________ _ _ _ _ _ _ _ _ _ _ _ _______________ _______________ _ _ _ _ _ _ _ _ _ _ _ _______________

Answer: No, he is wrong. The sum of 3 and 7 is 10 Addition sentence :  3 + 7 = 10 Starts at 7 and counts by 3, means 8, 9, 10 So, the answer is 0.

Draw to solve. Write the addition sentence.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 61

Explanation : Given that, The number of oranges Cindy and Joe pick = 8 The number of  more oranges they pick = 3 Total : 8 + 3 = 11 oranges Therefore, the number of total oranges = 11

________________________________________________________________________________________________________

1                  2                3                 4                5              6                  7                  8               9               10              11

Which three numbers can you use to complete the problem?

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 62

Explanation : Jennifer has  7 stamps Number of more stamps = 3 Addition sentence : 7 + 3 = 10

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 63

TAKE HOME ACTIVITY • Have your child tell you how to count on to find the sum for 6 + 3.

Count On Homework & Practice 3.2

Circle the greater addend. Count on to find the sum.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 64

Answer: Greater addend : 8 8 + 2 = 10

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 65

Answer: Greater addend : 7 1 + 7 = 8

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 66

Answer: Greater addend : 9 3 + 9 = 12

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 67

Answer: Greater addend : 5 5 + 3 = 8

Go Math 1 Circle The Greater Addend Count on to Find the Sum Question 5. Jon eats 6 crackers. Then he eats 3 more crackers. How many crackers does he eat? __ + __ = __ crackers

Explanation : Number of crackers Jon eat = 6 Number of crackers he ate more = 3 Total : 6 + 3 = 9 Crackers Therefore, Jon ate 9 crackers .

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 68

Answer: 9 + 3 = 12

Question 1. Count on to solve 5 + 2. Write the sum __

Answer: 5 + 2 = 7

Question 2. Count on to solve 1 + 9. Write the sum. __

Answer: 1 + 9 = 10

Question 3. What does the model show? __ + __ = ___

Answer: 3 + 3 = 6

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 69

Answer: 4 + 2 = 6

Lesson 3.3 Add Doubles

Essential Question What are doubles facts?

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 70

__ + __ = __

Answer: 2 + 2 = 4

Math Talk MATHEMATICAL PRACTICES Use Tools Describe how your model shows a doubles fact.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 71

Answer:                                                             Answer:

1 + 1 = 2                                                           2 + 2 = 4

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 72

_____________________________

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 75

Answer: 4 + 4 = 8

___________________________

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 76

_______________________________________________

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 77

Answer: 6 + 6 = 12

____________________________________________________________________________

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 78

Answer: 7 + 7 = 14

______________________________________________________________________________

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 81

Answer: 8 + 8 = 16

________________________________________________________________________

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 82

________________________________________________________________

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 84

Answer: 10 + 10 = 20

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 87

Write a doubles fact to solve.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 89

Answer : 16

Explanation : The number of apples meg kept in a basket = 8 The number of apples Paul kept in a basket = 8 Total : 8 + 8 = 16 apples Therefore, total number of apples in the basket = 16

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 90

Answer : 9 + 9 = 18

Explanation : Given, Total number of people in the party = 18 Also given , The number of boys is the same as the number of girls. So, 9 + 9 = 18.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 91

Answer: The number sentence with doubles fact = 4 + 4 = 8

TAKE HOME ACTIVITY • Have your child choose a number from 1 to 10 and use that number in a doubles fact. Repeat with other numbers.

Add Doubles Homework & Practice 3.3

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 92

Question 4.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 97

Go Math Grade 1 Pdf Lesson 3.3 Eat It or Toss It Answer Key Question 5. There are 16 crayons in the box. Some are green and some are red. The number of green crayons is the same as the number of red crayons. __ = __ + __

Answer: 16 = 8 + 8

Given , The total number of crayons in the box = 16 Also give, the number of green crayons is the same as the number of red crayons. Now, By using doubles fact we can write number sentence as: 8 + 8 = 16

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 98

Question 1. Write a doubles fact with the sum of 18. __ + __ = 18

Answer: A doubles fact with the sum of 18 = 9 + 9 = 18

Question 2. Write a doubles fact with the sum of 12. __ + __ = 12

Answer: A doubles fact with the sum of 12 = 6 + 6 = 12

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 99

Explanation: The sum of 3 and 2 is 5 Number sentence : 3 + 2 = 5

Question 4. Draw circles to show the numbers. Write the sum. __ + __ = __

Go Math Grade 1 Answer Key Chapter 3 img_1

Lesson 3.4 Use Doubles to Add

Essential Question How can you use doubles to help you add?

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 100

There are __ fish.

Look for Structure How does knowing 3 + 3 help you solve the problem?

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 101

Answer: 6 + 7 =  13 By using doubles fact , 13 can be shown as 6 + 6 + 1 = 13

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 102

Answer : 9 + 8 = 17 8 + 8 + 1 = 17 So, 9 + 8 = 17

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 104

Answer: 5 + 5 + 1 = 11 So, 5 + 6 = 11

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 105

Answer: 7 + 8 = 15 By using doubles fact , 7 + 7 + 1 = 15

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 108

Answer : 5 + 4 = 9 By using doubles fact , 4 + 4 + 1 = 9

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 109

Answer :  17

Explanation : Given , the total number of leaves = 17 Also given , Mandy has the same number of red and yellow leaves And also find another yellow flower By using doubles plus one effect , we can show addition sentence as : 8 + 8 + 1 = 17 Therefore, Number of red flowers = 8 Number of yellow flowers = 9.

GO DEEPER Explain Would you use count on or doubles to solve? Why?

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 110

Answer: 3 + 3 + 1 = 7 Doubles plus one fact.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 111

Answer : 9 and count on 3

Problem Solving • Applications

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 112

Explanation: The number of red cubes = 7 The number of yellow cubes = 8 Total : 7 + 8 = 15 Number sentence with double fact = 7 + 7+ 1 = 15 So, 7 + 8 = 15

TAKE HOME ACTIVITY • Ask your child to show you how to use what he or she knows about doubles to help solve 6 + 5.

Use Doubles to Add Homework & Practice 3.4

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 114

Answer: 5 + 6 = 11 The number sentence with doubles fact = 5 + 5 + 1 = 11

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 116

Answer: 9 + 8 = 17 The number sentence with doubles fact = 8 + 8 + 1 = 17

Use doubles to help you add.

Question 3. 8 + 7 = __ Answer: Doubles plus one fact.

Explanation : 8 + 7 = 15 The number sentence with doubles fact : 7 + 7 + 1 = 15

Question 4. 6 + 5 = __

Answer: Doubles plus one fact.

Explanation : 6 + 5 = 11 The number sentence with doubles plus one fact : 5 + 5 + 1 = 11

Question 5. 7 + 6 = __

Answer: Doubles plus one fact .

Explanation : 7 + 6 = 13 The number sentence with doubles plus one fact : 6 + 6 + 1 = 13

Solve. Draw or write to explain.

Go Math 1st Grade Lesson 1 Homework 3.4 Question 6. Bo has 6 toys. Mia has 7 toys. How many toys do they have? __ toys

Explanation: The number of toys Bo have = 6 The number of toys Mia have = 7 Total : 6 +7 = 13 Therefore, the total number of toys they both have = 13

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 117

Question 1. Use doubles to find the sum of 7 + 8. Write the number sentence. __ + __ + __ = __ Answer: The sum of 7 + 8 = 15 The number sentence with doubles plus one fact : 7 + 7 + 1 = 15

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 118

Answer: 8 – 6 = 2

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 119

Answer: 7 – 2 = 5 Therefore, there are 5 fewer black kittens are there than gray kittens.

Lesson 3.5 Doubles Plus 1 and Doubles Minus 1

Essential Question How can you use what you know about doubles to find other sums?

How can you use the doubles fact, 4 + 4, to solve each problem? Draw to show how. Complete the addition sentence.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 120

  • 4 + 4 + 1 = 9 – Doubles plus one fact
  •  4 + 4 – 1 = 7 – Doubles minus one fact.

Explain what happens to the doubles fact when you increase one addend by one or decrease one addend by one.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 121

Answer: 2 + 2 = 4 2+ 2+ 1 = 5  doubles plus one 2 + 2 – 1 = 3 – doubles minus one.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 123

Answer : 3 + 3 = 6 3 + 3 + 1 = 7 – Doubles plus one 3 + 3 – 1 = 5 – Doubles minus one

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 124

Answer : 4 + 4 = 8 4 + 4 + 1 = 9 – Doubles plus one 4 + 4 – 1 = 7 – Doubles minus one

MATHEMATICAL PRACTICE Make Connections Add. Write the doubles fact you used to solve the problem.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 125

Explanation : 8 + 9 = 17 The number sentence with doubles plus one fact : 8 + 8 + 1 = 17

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 126

Answer: Doubles plus one fact . Explanation : 2 + 3 = 5 The number sentence with doubles plus one fact : 2 + 2 + 1 = 5

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 127

Explanation : 7 + 6 = 13 The number sentence with doubles plus one fact : 6 + 6 + 1 = 15

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 127.1

Explanation : 6 + 5 = 11 The number sentence with doubles plus one fact : 5 + 5 + 1 = 15

Explanation : 3 + 4 = 7 The number sentence with doubles plus one fact : 3 + 3 + 1 = 7

Explanation : 4 + 5 = 9 The number sentence with doubles plus one fact : 4 + 4 + 1 = 15

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 128

Answer : 13

Explanation : The number of toy ducks Brianna

THINK SMARTER Add. Write the doubles plus one fact. Write the doubles minus one fact.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 129

Answer : 6 + 6 = 12 6 + 6 + 1 = 1 3 6 + 6 – 1 = 11

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 130

Answer : 9 + 9 = 18 – No 5 + 5 = 10 -Yes 4 + 4 = 8 – Yes

TAKE HOME ACTIVITY • Have your child explain how to use a doubles fact to solve the doubles plus one fact 4 + 5 and the doubles minus one fact 4 + 3.

Doubles Plus 1 and Doubles Minus 1 Homework & Practice 3.5

Add. Write the doubles fact you used to solve the problem.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 132

Explanation : 8 + 7 = 15 The number sentence with doubles plus one fact : 7 + 7 + 1 = 15

Explanation : 6 + 7 = 13 The number sentence with doubles plus one fact : 6 + 6 + 1 = 13

Explanation : 4 + 3 = 7 The number sentence with doubles plus one fact : 3 + 3 + 1 = 7

Explanation : 2 + 1 = 3 The number sentence with doubles plus one fact : 1 + 1 + 1 = 3

Explanation : 3 + 2 = 5 The number sentence with doubles plus one fact : 2 + 2 + 1 = 5

Question 7. Andy writes an additional fact. One addend is 9. The sum is 17. What is the other addend? Write the additional fact. __ + ___ = 17

Answer : 9 + 8 = 17 Therefore, other addends = 8

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 133

Answer : 4 + 5 = 9 By using doubles plus one fact , 4 + 4 + 1 = 9

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 134

Answer: The number sentence with double plus one : 2 + 2 + 1 = 5

Question 2. Which doubles fact helps you solve 8 + 7 = 15? Write the number sentence. __ + __ + __

Answer: 8 + 7 = 15 The number sentence with doubles plus one fact  : 7 + 7 + 1 = 15

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 135

Answer : 7 + 2 = 9 Therefore, total number of dogs = 9

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 136

Answer : 2 + 1 = 3

Lesson 3.6 Practice the Strategies

Essential Question What strategies can you use to solve addition fact problems?

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 136.1

Math Talk MATHEMATICAL PRACTICES Look for Structure Why is the sum the same when you use different strategies?

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 137

Answer : 4 + 1 =5 5+ 1 = 6 6+ 1= 7 7 + 1 = 8

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 139

5+ 2= 7 6 + 2 = 8 7 + 2 = 9 8 + 2 = 10

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 140

Answer : 6 + 3 = 9 7 + 3 = 10 8 + 3 = 11 9 + 3 = 1 2

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 141

Answer : 7 + 7 = 14 8 + 8 = 16 9 + 9 =18 10 + 10 = 20

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 142

Answer : Doubles plus one : 5 + 5 + 1 = 11 6 + 6 + 1 = 13 Doubles minus one : 7 + 7 – 1 = 15 8 + 8 -1 = 17

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 143

Question 6. 9 + 9 = __

Question 7. 7 + 1 = __

Question 8. 5 + 3 = __

Question 9. 2 + 9 = __

Answer : 2 + 9 = 11

Question 10. 7 + 3 = __

Answer : 7 + 3 = 10

Question 11. 7 + 7 = __

Answer : 7 + 7 = 14

Question 12. 6 + 5 = __

Answer : 6 + 5 = 11

Question 13. 2 + 8 = __

Answer : 8 + 2 = 10

Question 14. 8 + 8 = __

Answer : 8 + 8 = 16

Question 15. 8 +9 = __

Answer : 8 + 9 = 17

Question 16. 9 + 3 = __

Answer : 9 + 3 = 12

Question 17. 7 + 8 = __

Answer : 7 + 8 = 15

THINK SMARTER Make a counting on the problem. Write the missing numbers.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 145.1

Answer : The birds on a tree = 7 The number of birds flew there = 3 Total : 7 + 3 = 10

TAKE HOME ACTIVITY • Have your child point out a doubles fact, a doubles plus one fact, a doubles minus one fact, and a fact he or she solved by counting on. Have him or her describe how each strategy works.

Practice the Strategies Homework & Practice 3.6

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 145.2

Answer : 8 + 1 = 9

Answer : 1 + 7 = 8

Answer : 8  + 3 = 11

Answer : 5 + 5 = 10

Answer : 8 + 7 = 15

Answer : 6 + 3 = 9

Answer : 6 + 6 = 12

Make a counting on problem. Write the missing numbers.

Question 10. __ apples are in a bag. __ more apples are put in the bag. How many apples are in the bag now? __ apples

Answer : 5 apples are in a bag. 2 more apples are put in the bag. Total number of apples = 5 + 2 = 7

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 146

Question 1. Which strategy would you use to find 2 + 8? Explain how you decided. _________________________ _________________________

Answer : Count on. 8 + 2 = 10

Question 2. What is the sum of 9 + 9? Write the number. __

Answer: 18 The sum of 9 + 9= 18

Question 3. What is the sum of 5 + 2 or 2 + 5? Why is the sum the same? _________________________ _________________________

Answer: The sum of 5 + 2 or 2 + 5 = 7 The sum is same because

Question 4. How many flowers are there? Write the number. 3 flowers and 3 more flowers __ flowers

Answer: 6 3 + 3 = 6

Addition Strategies Mid-Chapter Checkpoint

Concepts and Skills

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 147

Answer : 4 + 8 = 12

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 148

Answer : 9 + 7 = 16

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 149

Answer: Greater addend : 7 3 + 7 = 10

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 151

Answer : Greater addend  : 6 6 + 3 = 9

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 153

Answer : Greater addend  : 7 7 + 1 = 8

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 154

Answer : Greater addend  : 8 2 + 8 = 10

Question 9. 7 + 8 = __

Answer : 7 + 8 = 15 Doubles fact : 7 + 7 + 1 = 15

Question 10. 6 + 7 = __

Answer : 6 +7 = 13 Doubles fact  : 6 + 6 + 1 = 13

Question 11. 9 + 8 = __

Answer : 9 + 8 = 17 Doubles fact : 8 + 8 +1 = 17

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 155

Answer : Count on fact to show sum of 8 = 7 +1 = 8 Doubles fact plus one = 4+ 4+ 1 = 8

Lesson 3.7 Add 10 and More

Essential Question How can you use a ten frame to add 10 and some more?

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 156

Answer: 10+ 5 = 15

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 157

Math Talk MATHEMATICAL PRACTICES Reasoning Explain how your model shows 10 + 5.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 156.2

Answer: 10 + 3 = 13

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 160

Answer : 10+ 1 = 11

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 162

Answer : 10 + 2 = 12

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 163

Answer : 10+ 4 = 14

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 164

Answer : 10+ 7 = 17

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 165

Answer: 10 + 8 = 18

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 166.2

Answer: 10 + 2 = 12

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 167

Answer: 10 + 6 = 16

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 168

Answer: 10+9 = 19

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 169

Answer: 10+ 1 = 11

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 170

Answer : 4 + 10 = 14

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 171

Answer : 5 + 10 = 15

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 172

Answer : 10 + 3 = 13

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 173

0 + 10 = 10

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 173.1

Answer: 10+ 4 = 14

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 175

Answer: 1 7

Explanation : The number of crayons Marina have = 10 The number of crayons she gets more = 7 Addition sentence : 1 0 + 7 = 17 Therefore, total crayons Marina have = 17

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 176

TAKE HOME ACTIVITY • Have your child choose a number between 1 and 10 and then find the sum of 10 and that number. Repeat using other numbers.

Add 10 and More Homework & Practice 3.7

Draw red ○ to show 10. Draw ○ yellow to show the other addend. Write the sum.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 177

Answer : 10 + 7 = 17

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 178

Answer : 10+ 5 = 15

Draw red and yellow ○ to solve. Write the addition sentence.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 179

Question 3. Linda has 10 toy cars. She gets 6 more cars. How many toy cars does she have now? __ + __ = __ toy cars

Explanation: The number of toys Linda have = 10 The number of toys she gets more = 6 Total : 10 + 6 = 16 Therefore, the total number of toys she have now = 16

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 180

Answer: The addition sentence : 10 + 8 = 18

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 184

2. 5 + 5 = 10

3. 8 + 2 = 10

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 185

Explanation : The number of large turtles : 3 The number of small turtles = 1 Number sentence : 3 + 1 = 4 Therefore, total number of turtles = 4

Lesson 3.8 Make a 10 to Add

Essential Question How do you use the make a ten strategy to add?

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 185.1

Answer: 9 + 6 = 15 9 + 1 = 10 10 + 5 = 15

Math Talk MATHEMATICAL PRACTICES Use Tools Why do you start by putting 9 counters in the ten frame?

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 187

Answer : 9 + 5 = 14 9 + 1 = 10 So, 10 + 4 = 14

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 190

Answer : 4 + 7 = 11 7 + 3 = 10 10 + 1 = 11

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 191

Answer : 9 + 8 = 17 9 + 1 = 10 10+ 7 = 17

MATHEMATICAL PRACTICE Use a Concrete Model

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 192

Answer : 8 + 2 = 10 10 + 3 = 13 So, 5 + 8 = 13

Draw to make a ten. Write the missing number.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 193

Answer : 16 times

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 194

Question 7. 10 + 8 has the same sum as 9 + __.

Answer: 10+ 8 = 18 9 + 9 = 18

Question 8. 10 + 7 has the same sum as 8 + __.

Answer: 10 + 7 = 17 8 +  9 = 17

Question 9. 10 + 5 has the same sum as 6 + __.

Answer : 10 +5 = 15 6 + 9 = 15

Question 10. GO DEEPER Write the numbers 6, 8, or 10 to complete the sentence __ + __ has the same sum as __ + 8

Answer: 10+ 6 = 18 has the same sum of 8 + 8.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 195

Answer: 7 + 3 = 10 10 + 1 = 11 So, 7 + 4 = 11

TAKE HOME ACTIVITY • Cut off 2 cups from an egg carton or draw a 5-by-2 grid on a sheet of paper to create a ten frame. Have your child use small objects to show how to make a ten to solve 8 + 3, 7 + 6, and 9 + 9.

Make a 10 to Add Homework & Practice 3.8

Use red and yellow ○ and a ten frame. Show both addends. Draw to make a ten. Then write the new fact. Add.

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 196

Answer: 5 + 5 = 10 10 + 2 = 12 So, 5 + 7 = 12

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 197

Answer: 9 + 1 = 10 10 + 4 = 14 So, 9 + 5 = 14

Solve. Question 3. 10 + 6 has the same sum as 7 + __.

Answer: 9 10 + 6 = 16 7 + 9 = 16

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 198

Answer: 5 + 7 = 12 5 + 5 = 10 10 + 2 = 12

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 199

Answer: Number sentence : 10 + 5 = 15

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 200

Answer: Number sentence : 10 + 4 = 14

Question 3. What is the sum of 4 + 6? Write the sum. __

Answer: 4 + 6 = 8 The sum of 4 + 6 = 8

Go Math Grade 1 Chapter 3 Answer Key Pdf Addition Strategies 201

Explanation : The number of big flowers = 2 The number of small flowers = 4 Number sentence : 2 + 4 = 6 Therefore, Total number of flowers = 6

Lesson 3.9 Use Make a 10 to Add

Essential Question How can you make a ten to help you add?

Go Math Answer Key Grade 1 Chapter 3 Addition Strategies 202

Math Talk MATHEMATICAL PRACTICES Represent Describe how the drawings show how to make a ten to solve 6 + 7.

Go Math Answer Key Grade 1 Chapter 3 Addition Strategies 203

Write to show how you make a ten. Then add.

Go Math Answer Key Grade 1 Chapter 3 Addition Strategies 204

Answer: 8 + 2 + 2 = 12 10 + 2 = 12 So, 8 + 4 = 12

Go Math Answer Key Grade 1 Chapter 3 Addition Strategies 205

Answer: 7 + 3 = 10 10 + 2 = 12 So, 5 + 7 = 12

THINK SMARTER Write to show how you make a ten. Then add.

Go Math Answer Key Grade 1 Chapter 3 Addition Strategies 206

Answer: 8 + 2 = 10 10 + 5 = 15 So, 7 + 8 = 15

Go Math Answer Key Grade 1 Chapter 3 Addition Strategies 207

Answer: 9 + 1 = 10 1 0 + 7 = 17 So, 9 + 8 = 17 .

MATHEMATICAL PRACTICE Use Models

THINK SMARTER Use the model. Write to show how you make a ten. Then add.

Go Math Answer Key Grade 1 Chapter 3 Addition Strategies 208

Answer: 8 + 2 + 4 10 + 4 = 14 So, 8 + 6 = 14 Therefore, There are  14 balls of clay.

Use the clues to solve. Draw lines to match.

Go Math Answer Key Grade 1 Chapter 3 Addition Strategies 209

Question 7. GO DEEPER Look at Exercise 6. Han eats one apple. Now he has the same number of apples as Luis and Mike. How many red and green apples could he have? __ red apples and __ green apples

Answer : 7 red apples and 7 green apples

Go Math Answer Key Grade 1 Chapter 3 Addition Strategies 210

  • 8 + 2 + 2 = Yes
  • 5 + 4 + 3 = No
  • 6 + 7 + 3 = Yes

Use Make a 10 to Add Homework & Practice 3.9

Go Math Answer Key Grade 1 Chapter 3 Addition Strategies 211

Answer : 9 + 1 + 6 9 + 1 = 10 So, 9 + 6 = 15

Go Math Answer Key Grade 1 Chapter 3 Addition Strategies 212

Answer : 8 + 2 + 3 8 + 2= 10 So, 5 + 8 = 13

Go Math Answer Key Grade 1 Chapter 3 Addition Strategies 213

Answer: Ann – 10 green grapes and 6 red grapes. Gia – 7 green grapes and 9 red grapes.

Go Math Answer Key Grade 1 Chapter 3 Addition Strategies 214

Answer : 8 + 2 = 10 10 + 2 = 14

Go Math Answer Key Grade 1 Chapter 3 Addition Strategies 216

Answer: 5 – 5 = 0

Go Math Answer Key Grade 1 Chapter 3 Addition Strategies 217

Answer : 8 – 2 = 6

Lesson 3.10 Algebra • Add 3 Numbers

Essential Question How can you add three addends?

Go Math 1st Grade Answer Key Chapter 3 Addition Strategies 218

Math Talk MATHEMATICAL PRACTICES Apply Which two addends did you add first? Explain.

Go Math 1st Grade Answer Key Chapter 3 Addition Strategies 219

Answer: 5 + 2 + 3 = 10

Addition sentences :

  •  7 + 3 = 10
  •  5 + 5 = 10

Go Math 1st Grade Answer Key Chapter 3 Addition Strategies 221

Answer: 3 + 4 + 6  = 13

  •  3 + 10 = 13
  •  7 + 6 =   13

MATHEMATICAL PRACTICE

Go Math 1st Grade Answer Key Chapter 3 Addition Strategies 222

Answer: 7 + 3 + 1 = 11 Addition sentences :

  • 7   + 4 = 11
  • 10 + 1 = 11

Go Math 1st Grade Answer Key Chapter 3 Addition Strategies 223

Answer: 3 + 6 + 3 = 12

  •  6 + 6 = 12
  •  3 + 9 = 12

GO DEEPER Solve both ways.

Go Math 1st Grade Answer Key Chapter 3 Addition Strategies 224

Answer: 2 + 3 + 7 = 12

  • 2 + 10 = 12
  • 5 +  7  = 1 2

Go Math 1st Grade Answer Key Chapter 3 Addition Strategies 226.1

Answer: Addition sentence : 2 + 2 + 3 = 7

Go Math 1st Grade Answer Key Chapter 3 Addition Strategies 227

Answer: 6 = 4 + 2 6 = 5 + 1

Go Math 1st Grade Answer Key Chapter 3 Addition Strategies 228

Answer: The addition sentences shows the sum 12 are : 1. 2 + 2 + 8 = 12 2.  6 + 0 + 6 = 12 The addition sentences shows the sum 13 are :

  •  3 + 5 + 5 = 13
  •  4 + 4 +5 = 13

TAKE HOME ACTIVITY • Have your child draw to show two ways to add the numbers 2, 4, and 6.

Algebra • Add 3 Numbers Homework & Practice 3.10

Go Math 1st Grade Answer Key Chapter 3 Addition Strategies 229

Explanation: The two addition sentences  to find the sum are

  •  5 + 6 = 11
  •  9 + 2 = 11

Question 2. Choose three numbers from 1 to 6. Write the numbers in an addition sentence. Show two ways to find the sum.

Go Math 1st Grade Answer Key Chapter 3 Addition Strategies 231

Answer: 3 + 5 + 2 = 10

Question 1. What is the sum of 3 + 4 + 2? Write the sum. __

Explanation: The sum of 3 + 4 + 2 = 9 Therefore, sum = 9

Question 2. What is the sum of 5 + 1 + 4? Write the sum. __

Explanation: The sum of 5 + 1 + 4 = 10 Therefore, sum = 10

Go Math 1st Grade Answer Key Chapter 3 Addition Strategies 232

Explanation: The sum of 3 and 7: 3 + 7 =10

Go Math 1st Grade Answer Key Chapter 3 Addition Strategies 233

Answer: Number sentence : 4 + 2 = 6 Therefore, the number of cows in the barn = 6

Lesson 3.11 Algebra • Add 3 Numbers

Essential Question How can you group numbers to add three addends?

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 234

Apply Describe the two ways you grouped the numbers to add.

Choose a strategy. Circle two addends to add first. Write the sum. Then find the total sum. Then use a different strategy and add again.

Go Math 1st Grade Answer Key Chapter 3 Addition Strategies 235

Answer: Two addends : 6 , 4 Sum : 6 + 4 = 10 Total sum : 6 + 4 + 2 = 12

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 236

Answer: Two addends : 3 , 4 Sum : 3 + 4 = 7 Total sum : 3 + 4 + 4 = 11

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 237

Answer: Two addends : 2 , 5 Sum : 2 + 5 = 7 Total sum : 2 + 5 + 0 = 7

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 238

Answer: Two addends : 5 , 5 Sum : 5 + 5 = 10 Total sum : 5 + 4 + 5 = 14

MATHEMATICAL PRACTICE Use Repeated Reasoning Choose a strategy. Circle two addends to add first. Write the sum.

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 239

Answer: Two addends : 8 , 2 Sum : 8 + 2 + 2 =12

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 240

Answer : Two addends : 6, 0 Sum : 6 + 0 + 8 = 14

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 241

Answer : Two addends : 3 , 4 Sum : 3 + 4 + 6 = 13

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 242

Answer: Two addends : 2 , 3 Sum : 2 + 3 + 7 = 12

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 243

Answer: Two addends : 7 , 7 Sum : 7 + 7 + 2 = 16

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 244

Answer: Two addends : 1 , 1 Sum : 1 + 9 + 1 = 11

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 245

Answer: Two addends : 4 , 4 Sum : 5 + 4 + 4 = 13

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 246

Answer : Two addends : 5 , 5 Sum: 5 + 5+ 5 = 15

Question 13. THINK SMARTER Susan has 7 shells. Kai has 3 shells. Zach has 5 shells. How many shells do they have? __ + __ + __ + __ = __ shells

Explanation : The number of shells Susan has = 7 The number of Shells Kai have = 3 The number of shells Zach have = 5 Total : 7 + 3 + 5 = 15 Therefore, the number of  shells they have = 7+3+5 = 15

THINK SMARTER Write the missing addends. Add.

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 247

Answer: The possible addend be 0,8 ; 1,7; 2,6; 3,5; 4,4 ; 5,3 ; 6,2 ; 7,1 ; 8,0 The sum of the number sentence is 11

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 248

Answer: Possible addends are : 0,7; 1,6; 2,5; 3,4; 4,3; 5,2; 2,6; 1,7; 7,0. The sum of number sentence = 10

Draw a picture. Write the number sentence.

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 249

Explanation: The number of cats Maria have = 3 The number of cats Jim have = 2 The number of cats Cheryl have = 5 Total : 3 + 2 + 5= 10 Therefore, the total number of cats Maria have = 10

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 250

Explanation: The number of small turtles = 5 The number of medium turtles = 0 The number of big turtles = 4 Total : 5 + 0 + 4 = 9 Therefore, the number of turtles tony have = 9

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 251

Answer: The sum of  blue and red fish is 7 Total number of fishes in the tank = 13 Number of gold fishes = 6 Let, the number of blue fishes = 3 the number of red fishes = 4 Total red and blue fishes = 3 + 4 = 7 Number sentence : 3 + 4 + 6 = 14

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 252

Answer: 2 + 3 + 4 = 9

TAKE HOME ACTIVITY • Have your child look at Exercise 18. Have your child tell you how he or she decided which numbers to use. Have him or her tell you two new numbers that would work.

Algebra • Add 3 Numbers Homework & practice 3.11

Choose a strategy. Circle two addends to add first. Write the sum.

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 253

Answer: Two addends : 7, 3 Sum : 7 + 3 + 3 = 13

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 254

Two addends : 2 , 2 Sum : 2 + 2+ 6 = 10

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 255

Answer: Two addends : 6 , 6 Sum : 6 + 6 +3 = 15

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 256

Answer: Two addends : 0 , 8 Total : 2 + 0 + 8 = 10

Question 5. Don has 4 black dogs. Tim has 3 small dogs. Sue has 3 big dogs. How many dogs do they have? __ + __ + __ = __ dogs

Explanation : The number of dogs Don have = 4 The number of dogs Tim have = 3 The number of dogs Sue have = 3 Total : 4 + 3 +3 = 10 Therefore, the number of dogs they have = 10

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 257

Answer : 6 + 4 + 4 = 14

Question 1. What is the sum of 4 + 4 + 2? __

Answer: 4 + 4 + 2 = 10

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 258

Answer: 7 + 3 = 10 Total sum : 7 + 3 + 2 = 12

Question 3. Write a doubles plus one fact for the sum of 7. __ + __ = __

Answer: A doubles plus one fact for the sum of 7 : 3 + 4 = 7 3 + 3 + 1 = 7

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 259

Answer: Number sentence  : 8 + 3 = 11

Lesson 3.12 Problem Solving • Use Addition Strategies

Essential Question How do you solve addition word problems by drawing a picture?

Megan put 8 fish in the tank. Tess put in 2 more fish. Then Bob put in 3 more fish. How many fish are in the tank now?

Unlock the Problem

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 260

Explanation : Given, Megan put in 8 fish. Tess put in 2 fish. Bob put in 3 fish. Total : 8 + 2 + 3 = 13 Therefore, total number of fishes = 13

HOME CONNECTION • Your child will continue to use this chart throughout the year to help him or her unlock the problem. In this lesson, your child used the strategy draw a picture to solve problems.

Try Another Problem

Draw a picture to solve.

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 262

Answer : 15

Explanation : The number of green toy cars = 9 The number of yellow toy cars = 1 The number of blue toy cars = 5 Total : 9 + 1 + 5 = 15 Therefore, the total number of toy cars he have now = 15

Math Talk MATHEMATICAL PRACTICES Reasoning Explain how using make a ten helps you solve the problem.

Write an Equation Draw a picture to solve.

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 263

Explanation : The number of marbles Ken kept in a jar = 5 The number of Lou kept in a jar = 0 The number of marbles Mae kept in jar = 5 Total : 5 + 0 + 5 = 10 marbles Therefore, there are 10 marbles in the jar.

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 264

Answer : 11

Explanation : The number of kites Ava have = 3 The number of kites Lexi have = 3 The number of kites Fred have = 5 Total : 3 + 3 + 5 = 11 Kites Therefore, the number of kites they have = 11

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 265

Explanation : The number of books Al got from library = 8 The number of books Ryan got from library = 7 The number of books Dee got from library = 1 Total : 8 + 7 + 1 = 16 books Therefore, the number of books they have = 16

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 266

Explanation : The number of letters Pete sends = 4 The number of letters he sends more = 3 Then also the number of letters he sends more = 2 Total : 4 + 3 + 2 = 9 letters Therefore, the number of letters Pete sends = 9

On Your Own WRITE Math

Solve. Draw or write to show your work.

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 267

Explanation : Total number of basketball cards = 15 The number of cards he gives away = 8 Now, the number basketball he have now = 15 – 8 = 7 Therefore, the number of cars he have now = 7

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 268

Explanation : Total number of pencils = 14 The number of pencils Haley have = 6 The number of pencils Mac have = 4 Total : 6 + 4 = 10 The number of pencils Sid have = 14 – 10 = 4 Therefore, Sid have 4 pencils.

Question 8. GO DEEPER 12 marbles are in a bag. Shelly takes 3 marbles. Dan puts in 4. How many marbles are in the bag now? __ marbles

Explanation : The total number of marbles in a bag = 12 The number of marbles Shelly takes out = 1 2 – 3 = 9 The number of marbles Dan puts in = 4 9 + 4 = 13 Therefore, total number of marbles in the bag = 13

Question 9. THINK SMARTER Eric has 4 pencils. Sandy gives Eric 3 pencils. Tracy gives Eric 5 more pencils. How many pencils does Eric have in all? Eric has ☐ pencils in all.

Explanation : The number of pencils Eric have = 4 The umber of pencils Sandy gives Eric  = 3 The number of pencils Tracy gives Eric  = 5 Total : 4 + 3 + 5 = 12 Therefore, the total number pencils Eric have = 12.

TAKE HOME ACTIVITY • Ask your child to look at Exercise 8 and tell how he or she found the answer.

Problem Solving • Use Addition Strategies Homework & Practice 3.12

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 269

Explanation : The number of crayons Franco have = 5 The number of crayons he gets more = 8 The number of crayons he gets more = 2 Total number of crayons = 5 + 8 + 2 = 15 Therefore, the number of crayons he have now = 15

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 270

Answer : 14

Explanation: The number of blocks Jackson have = 6 The number of blocks Jackson gets more = 5 + 3 = 8 Total : 6 + 8 = 14 Therefore, Jackson have 14 blocks.

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 271

Answer : 12

Explanation : The number of gifts Ava have = 7 The number of gifts Ava gets more = 2 + 3 = 5 Total : 7 + 5 = 12 Therefore, Ava have 12 gifts.

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 272

Explanation : The number of large rocks Jeb have = 4 The number of medium rocks Jeb have = 4 The number of small rocks Jeb have = 7 Total : 4 + 4 + 7 = 15 Therefore, Jeb have 15 rocks.

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 273

Answer: The total number of stones = 14 Number sentence: 3 + 4 + 7 = 14

Explanation : The number of gray stones = 3 The number of black stones = 4 The number of white stones = 7 Total : 3 + 4 + 7 = 14

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 274

Answer: The Total number of stickers = 17 Number sentence: 3 + 6 + 8 = 17

Explanation: The number of red stickers = 3 The number of pink stickers = 6 The number of green stickers = 8 Total: 3 + 6 + 8 = 17

Question 3. What is the sum of 2 + 4 or 4 + 2? Write the number. ____

Explanation: The sum of of 2+4 or 4+2 = 6

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 275

Answer: The total number of pens = 9 Number sentence : 6 + 3 =9

Explanation: The number of black pens = 6 The number of blue pens = 3 Total : 6 + 3 = 9

Addition Strategies Chapter 3 Review/Test

Question 1. Write the addends in a different order. 5 + 4 = 9 __ + __ = __

Answer: The addition sentence with the addends in a different order = 4 + 5 = 9

Question 2. Count on from 4. Write the number that shows 1 more. __

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 276

Answer: The addition sentence with doubles fact : 5 + 5 = 10 Therefore, The sum of cubes = 10

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 277

Answer: 3 + 4 = 3 + 3 +1 So, 3 + 4 = 7

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 278

  •   7 + 7 = 14
  •   8 + 8 = 14

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 279

Answer: Addition sentence on 2 fact to show a sum of 10 8 + 2 = 10 Addition sentence with doubles fact to show a sum of 10. 5 + 5 = 10

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 280

Explanation: Given, The model shows 8 + 5 = 13. Addition sentence with 10 fact that has same sum = 10 + 3 = 13

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 282

Answer: 1.  7 + 3 + 2 –  Yes 2.   7 + 5 +5  –  Yes 3.  5 + 4 + 7 –   No

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 283

Explanation : The number of red cubes  = 2 The number of blue cubes = 3 The number of yellow cubes = 3 Now, The addition sentence : 2 + 3 + 4 = 9 Total sum of cubes = 9

Question 11. Write two ways to group and add 4 + 2 + 5. __ + __ = __ __ + __ = __

Answer: 4 + 2 + 5 = 11 The two ways are: 6 + 5 = 11 8 + 3 = 11

1st Grade Go Math Answer Key Chapter 3 Addition Strategies 284

Answer: 4 + 2 + 4 = 10 Beth sees = 10 birds

Final Words:

Learn the basics like addition, subtraction from the primary level itself. Refer to Go Math Grade 1 Answer Key Chapter 3 Addition Strategies to score good marks in the exams. Download the free pdf of HMH Go Math 1st Grade Answer Key Chapter 3 from this page.

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Eureka Math Grade 6 Module 1 Lesson 16 Answer Key

Engage ny eureka math 6th grade module 1 lesson 16 answer key, eureka math grade 6 module 1 lesson 16 example answer key.

Eureka Math Grade 6 Module 1 Lesson 16 Example Answer Key 1

Eureka Math Grade 6 Module 1 Lesson 16 Problem Set Answer Key

The Scott family is trying to save as much money as possible. One way to cut back on the money they spend is by finding deals while grocery shopping; however, the Scott family needs help determining which stores have the better deals.

Question 1. At Grocery Mart, strawberries cost $2. 99 for 2 lb., and at Baldwin Hills Market strawberries are $3. 99 for 3 lb. a. What is the unit price of strawberries at each grocery store? If necessary, round to the nearest penny. Answer: Grocery Mart: $1.50 per pound (1.495 rounded to the nearest penny) Baldwin Hills Market: $1.33 per pound

b. If the Scott family wanted to save money, where should they go to buy strawberries? Why? Answer: Possible Answer: The Scott family should go to Baldwin Hills Market because the strawberries cost less money there than at Grocery Mart.

Question 2. Potatoes are on sale at both Grocery Mart and Baldwin Hills Market. At Grocery Mart, a 5 lb. bag of potatoes cost $2.85, and at Baldwin Hills Market a 7 lb. bag of potatoes costs $4. 20. Which store offers the best deal on potatoes? How do you know? How much better is the deal? Answer: Grocery Mart: $0. 57 per pound Baldwin Hills Market: $0.60 per pound Grocery Mart offers the best deal on potatoes because potatoes cost $0.03 less per pound at Grocery Mart when compared to Baldwin Hills Market.

Eureka Math Grade 6 Module 1 Lesson 16 Exit Ticket Answer Key

Angela enjoys swimming and often swims at a steady pace to burn calories. At this pace, Angela can swim 1, 700 meters in 40 minutes. a. What is Angela’s unit rate? Answer: 42.5

b. What is the rate unit? Answer: Meters per minute

Eureka Math Grade 6 Module 1 Lesson 16 Exploratory Challenge Answer Key

a. Teagan went to Gamer Realm to buy new video games. Gamer Realm was having a sale: $65 for 4 video games. He bought 3 games for himself and one game for his friend, Diego, but Teagan does not know how much Diego owes him for the one game. What is the unit price of the video games? What is the rate unit? Answer: The unit price is $16.25; the rate unit is dollars/video game.

b. Four football fans took turns driving the distance from New York to Oklahoma to see a big game. Each driver set the cruise control during his or her portion of the trip, enabling him or her to travel at a constant speed. The group changed drivers each time they stopped for gas and recorded their driving times and distances in the table below.

Fan Distance (miles) Time (hours)
Andre 208 4
Matteo 456 8
Janaye 300 6
Greyson 265 5

Use the given data to answer the following questions.

i. What two quantities are being compared? Answer: The two quantities being compared are distance and time, which are measured in miles and hours.

ii. What is the ratio of the two quantities for Andre’s portion of the trip? What is the associated rate? Answer: Andre’s ratio: 208:4                Andre’s rate: 52 miles per hour

iii. Answer the same two questions in part (iii) for the other three drivers. Answer: Matteo’s ratio: 456:8            Matteo’s rate: 57 miles per hour Janaye’s ratio: 300:6             Janaye’s rate: 50 miles per hour Greyson’s ratio: 265:5          Greyson’s rate: 53 miles per hour

iv. For each driver In parts (II) and (III), circle the unit rate, and put a box around the rate unit. Answer: If one of these drivers had been chosen to drive the entire distance. Which driver would have gotten them to the game in the shortest time? Approximately how long would this trip have taken?

Eureka Math Grade 6 Module 1 Lesson 16 Exploratory Challenge Answer Key 3

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    Question 1. At Grocery Mart, strawberries cost $2. 99 for 2 lb., and at Baldwin Hills Market strawberries are $3. 99 for 3 lb. a. What is the unit price of strawberries at each grocery store? If necessary, round to the nearest penny. Answer: Grocery Mart: $1.50 per pound (1.495 rounded to the nearest penny) Baldwin Hills Market: $1.33 per pound.