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## Concept Review Topics

- AA Similarity
- AAS Postulate
- Absolute Value
- Accuracy and Error
- Absolute Value of a Complex Number
- Absolute Value Functions
- Absolute Value Inequalities
- Adding and Subtracting Complex Numbers
- Adding and Subtracting Decimals
- Adding and Subtracting Fractions with Like Denominators
- Adding and Subtracting Fractions with Negatives
- Adding and Subtracting Fractions with Unlike Denominators
- Adding and Subtracting Fractions
- Adding and Subtracting Matrices
- Adding and Subtracting Negatives
- Adding and Subtracting Rational Expressions with Like Denominators
- Adding and Subtracting Rational Expressions with Unlike Denominators
- Adding and Subtracting Vectors
- Adding Fractions with Like Denominators
- Adding Fractions with Unlike Denominators
- Adding Fractions
- Adding and Subtracting Polynomials
- Addition Rule of Probability
- Addition: Whole Numbers
- Additive Inverse
- Adjacent Angles
- Adjoint of a Matrix
- Advanced Factoring
- Alternate Exterior Angles
- Alternate Exterior Angles Theorem
- Alternate Interior Angles
- Alternate Interior Angles Theorem
- Altitude of a Triangle
- Amplitude and Period of Sine and Cosine Functions
- Angle Addition Postulate
- Angle-Angle Similarity
- Angle Bisector Theorem
- Angle Bisector
- Angle of Intersecting Chords Theorem
- Angle of Intersecting Secants Theorem
- Angle of Rotation
- Angle Sum Theorem
- Angles of Elevation and Depression
- Area of a Circle
- Area of a Triangle
- Area Problem Solving
- Areas of Regular Polygons
- Arithmetic Sequences
- Arithmetic Series
- ASA Postulate
- Associative Property
- Associative Property of Matrices
- Augmented Matrices
- Axis of Symmetry of a Parabola
- Base (Exponential Notation)
- Base (Logarithms)
- Base (Number Systems)
- Basic Operations
- Basic Trigonometric Identities
- Biconditional Statement
- Big and Small Numbers
- Binary Numbers
- Binomial Probability
- Binomial Series
- Binomial Theorem
- Bisectors in a Triangle
- Box and Whisker Plots
- Cartesian Plane
- Center and Variation of Data
- Center of Rotation
- Central Angles
- Choosing Appropriate Units of Measure
- Circle Graphs
- Circles Inscribed in Squares
- Circumcenter Theorem
- Circumference
- Cofunction and Odd-Even Identities
- Collinear Points
- Combinations
- Combined Variation
- Combining Like Terms with Exponents
- Combining Like Terms
- Common Difference
- Common Ratio
- Commutative Property
- Comparing and Ordering Integers
- Comparing Decimals
- Comparing Fractions
- Comparing Functions
- Comparing Linear, Polynomial, and Exponential Growth
- Comparing Quantities
- Compatible Matrices
- Complement of an Event
- Complementary Angles
- Completing the Square
- Complex Numbers
- Components of a Vector
- Composite Numbers
- Composition of Functions
- Compound Events
- Compound Inequalities
- Compound Interest
- Conditional Probability
- Conditional Statements
- Congruent Angles
- Congruent Figures
- Congruent Segments
- Congruent Tangents and Circumscribed Polygons
- Congruent Triangles on the Coordinate Plane
- Congruent Triangles
- Conic Sections and Standard Forms of Equations
- Conjunction
- Consecutive Interior Angles Theorem
- Consistent and Dependent Systems
- Constant Function
- Constant of Variation
- Converse, Inverse and Contrapositive
- Converse of Isosceles Triangle Theorem
- Converse of Pythagorean Theorem
- Convert between Systems
- Convert Units of Area and Volume
- Converting Fractions to Decimals
- Converting Fractions to Percent
- Converting Non Repeating Decimals to Fractions
- Converting Repeating Decimals to Fractions
- Coordinate Proofs
- Correlation and Causal Relation
- Corresponding Angles
- Corresponding Angles Postulate
- Cosine Function
- Coterminal Angles
- Counter Example
- Cramer's Rule
- Cross Products
- Cross Sections
- Cubic Functions
- Customary Units
- Decimals an Introduction
- Decimals, Adding and Subtracting
- Decimals, Multiplying and Dividing
- Decimals, Terminating and Repeating
- Decimals, Rounding
- Decimals and Percentages
- Degree (of a Monomial)
- Degree (of a Polynomial)
- Degree (of a Vertex)
- Degree Measure of an Angle
- Degree to Radian Measure
- Denominator
- Dependent Events
- Descartes Rule of Signs
- Describing the Graph of a Function
- Determinants
- Developing a Probability Distribution from Empirical Data
- Diagonals of Parallelograms
- Difference of Squares
- Different Bases
- Direct and Inverse Variation
- Direct Variation
- Discriminants
- Disjunction
- Distance between Parallel Lines
- Distance Formula in 3D
- Distance Formula
- Distributive Property of Matrices
- Distributive Property
- Dividing by a Fraction
- Dividing Complex Numbers
- Dividing Decimals
- Dividing Fractions
- Dividing Polynomials
- Dividing Rational Expressions
- Divisibility Tests
- Division Whole Numbers
- Domain and Range of Exponential and Logarithmic Functions
- Domain and Range of Rational Functions
- Domain and Range
- Double-Angle and Half-Angle Identities
- e (the Number)
- Eccentricity
- End Behavior of a Function
- Endvertex (Graph Theory)
- Equation of a Circle
- Equation of a Plane
- Equivalent Expressions
- Equivalent Fractions
- Equivalent Ratios
- Evaluating Expressions
- Even and Odd Functions
- Expected Value
- Experimental Probability
- Exponent Tables and Patterns
- Exponential Decay
- Exponential Functions
- Exponential Growth
- Exponential Regression
- Exponential to Logarithmic Form
- Exterior Angle Inequality
- Exterior Angle Theorem
- Extraneous Solutions
- Factor Theorem
- Factoring: a ≠ 1
- Factoring: b & c Positive
- Factoring: b Negative
- Factoring: c Negative
- Factoring by Grouping
- Factoring Monomials
- Falling Objects
- Fibonacci Numbers
- Finding Arc Lengths
- Finding the Area of a Triangle Using Sine
- Finding the Equation of a Line from Its Graph
- Finding the Equation of a Parabola given Focus and Directrix
- Finite Differences
- Fitting Equations to Data
- Fitting Linear Equations to Data
- Focus of a Parabola
- 45-45-90 Triangles
- Fraction Operations
- Frequency Distributions
- Functions Describing Behavior
- Functions: Graphs and Intersections
- Fundamental Counting Principle
- Fundamental Theorem of Algebra
- Gathering Like Terms
- Geometric Mean
- Geometric Probability
- Geometric Sequences
- Geometric Series
- Golden Ratio
- Golden Rectangle
- Graphing Exponential and Logarithmic Functions
- Graphing Exponential Functions
- Graph Theory
- Graphing Cosine Function
- Graphing Functions of the Form x^n
- Graphing Inequalities in One Variable
- Graphing Linear Equations
- Graphing Linear Inequalities in Two Variables
- Graphing Logarithmic Functions
- Graphing Polygons
- Graphing Polynomial Functions
- Graphing Quadratic Equations Using Factoring
- Graphing Quadratic Equations Using the Axis of Symmetry
- Graphing Quadratic Equations Using Transformations
- Graphing Quadratic Equations
- Graphing Quadratic Inequalities
- Graphing Rational Functions
- Graphing Scale and Origin
- Graphing Sine Function
- Graphing Square Root Functions
- Graphing Systems of Linear Inequalities
- Graphing Tangent Function
- Greatest Common Factors (GCFs)
- Greatest Common Factor of Monomials
- Hexadecimal Numbers
- Horizontal Lines
- Identity Matrix
- i(imaginary unit)
- Improper Fractions
- Independent/Dependent Events
- Independent Events
- Indirect Proof
- Inductive Reasoning
- Inequalities
- Infinite Geometric Series
- Input-Output Tables
- Inscribed Angles
- Inscribing a Quadrilateral
- Interpreting Data
- Interquartile
- Intersecting Chords Theorem
- Intersecting Chords
- Intersecting Secant-Tangent Theorem
- Intersecting Secants Theorem
- Interval Notation
- Inverse Functions
- Inverse Matrices
- Inverse Operations
- Inverse Trigonometric Functions
- Inverse Variation
- Irrational Numbers
- Irreducible Polynomials
- Isosceles Triangle Theorem
- Joint Variation
- Latus Rectum
- Law of Cosines
- Law of Detachment
- Law of Sines
- Law of Syllogism
- Leading Coefficient Test
- Least Common Denominators (LCDs)
- Least Common Multiples (LCMs)
- Line Graphs
- Line of best fit
- Line of best fit(Eyeball Method)
- Line Symmetry
- Linear Equations, Graphing
- Linear Equations, Solving
- Linear Equations, Systems of
- Linear Function
- Linear Pair
- Linear Programming
- Logarithmic Functions
- Logarithmic to Exponential Form
- Lowest Terms
- Magnitude and Direction of Vectors
- Major and Minor Axes of Conics
- Mapping Diagrams
- Matrix Dimensions
- Matrix Multiplication
- Matrix Row Operations
- Mean, Median and Mode
- Medians of a Triangle
- Metric System
- Midpoint Formula
- Midsegment of a Trapezoid
- Mixed Expressions
- Mixed Numbers: Addition
- Mixed Numbers: Division
- Mixed Numbers: Multiplication
- Mixed Numbers: Subtraction
- Mixed Numbers
- More on Hyperbolas
- Multiplication Rule of Probability
- Multiplication: Whole Numbers
- Multiplicative Inverse
- Multiplying a Fraction by a Fraction
- Multiplying a Fraction by an Integer
- Multiplying and Dividing with Decimals
- Multiplying and Dividing with Negatives
- Multiplying Complex Numbers
- Multiplying Decimals
- Multiplying Monomials
- Multiplying Polynomials
- Multiplying Rational Expressions
- Multiplying Vector by a Matrix
- Mutually Exclusive Events
- Natural Logarithm
- Natural Numbers
- Negative Exponents
- Normal Distribution of data
- nth Term of a Geometric Sequence
- nth Term of an Arithmetic Sequence
- nth Term of a Sequence
- Number Line
- Number Systems
- Odds (Probability)
- One to One Functions
- Operations on Functions
- Operations on Mixed Numbers
- Operations on Sets
- Operations with Complex Numbers
- Operations with Decimals
- Operations with Fractions
- Operations with Negatives
- Ordered Pair
- Order of Operations
- Parabolas as Conic Sections
- Parallel Lines and Proportionality
- Parallel Lines and Slopes
- Parallel Lines and Transversals
- Parallel Lines
- Parallel and Perpendicular Lines
- Parallelogram
- Parametric Equations
- Parent Graphs
- Partioning a Segment in a given Ratio
- Parts of an Expression
- Pascal's Triangle
- Percent Increase and Decrease
- Percents and Decimals
- Percents and Fractions
- Perfect Numbers
- Perfect Squares
- Perimeter, Area and Volume
- Periodic Functions
- Permutations
- Perpendicular Bisector
- Perpendicular Lines and Slopes
- Perpendicular Lines
- Perpendicular Transversal Theorem
- Piecewise-Defined Function
- Place Value: Decimals
- Place Value
- Platonic Solids
- Point-Slope Form (of a Linear Equation)
- Polar Coordinates
- Polar Form of a Complex Number
- Polygon Exterior Angle Sum Theorem
- Polygon Interior Angles Sum Theorem
- Polynomial Function
- Polynomial with Complex Roots
- Power of a Power Property
- Power of a Product Property
- Power of a Quotient Property
- Power Series and Radius of Convergence
- Powers of 10
- Powers of i
- Prime and Composite Numbers
- Prime Factorization
- Prime Numbers
- Principal Value of a Square Root
- Probability Distribution
- Probability Models
- Probability
- Product of a Sum and a Difference
- Product of Powers Property
- Properties of Addition
- Properties of Congruence
- Properties of Equality
- Properties of Exponents
- Properties of Inequality
- Properties of Multiplication
- Properties of Square Roots
- Proportional Relationships
- Proportions
- Pythagorean Theorem
- Pythagorean Triples
- Quadratic Equations
- Quadratic Equations, Solving by Completing the Square
- Quadratic Equations, Solving by Factoring
- Quadratic Equations, Solving by Square Roots
- Quadratic Formula
- Quadratic Function
- Quadratic Regression
- Quadrilaterals
- Quotient of Powers Property
- Radian Measure of an Angle
- Radian to Degree Measure
- Radical Expressions
- Radical Equations
- Radius of Convergence
- Random Sampling
- Random Variable
- Range (of Data)
- Rate of Change
- Range (of a Function)
- Rate-Time-Distance Problems
- Rates and Ratios
- Rational Equations
- Rational Exponents
- Rational Functions
- Rational Expressions
- Rational Numbers
- Rationalizing the Denominator by Multiplying by a Conjugate
- Rationalizing the Denominator
- Real Numbers
- Real Zero of a Function
- Reciprocals
- Recursive Sequence
- Reduced Radical Form
- Reducing Fractions
- Reference Angle
- Reflections
- Reflexive, Symmetric, Transitive Properties
- Relatively Prime Numbers
- Remainder Theorem
- Repeated Zeros
- Representing Systems of Linear Equations using Matrices
- Repeating Decimals
- Right Triangle Congruence
- Right Triangle Similarity
- Rotational Symmetry
- Rounding Decimals
- Rounding Numbers
- Sample Space
- SAS Inequality
- SAS Postulate
- SAS Similarity
- Scalar Multiplication of Matrices
- Scalar Multiplication of Vectors
- Scale Drawings
- Scale Factor
- Scalene Triangle
- Scatter Plots
- Scientific Notation
- Segment Addition Postulate
- Shortest Distance between a Point and a Circle
- Side-Angle-Side Similarity
- Side-Side-Side Similarity
- Sigma Notation of a Series
- Significant Digits
- Similar Figures
- Similar Triangles
- Simple Interest
- Simplest Form (of a Fraction)
- Simplifying Absolute Value Expressions
- Simplifying Expressions
- Simplifying Logarithmic Expressions
- Simplifying Radical Expressions Involving Products
- Simplifying Radical Expressions with Variables
- Simplifying Radical Expressions
- Simplifying Rational Expressions
- Simplifying Square Roots
- Sine Function
- Slant Height of a Pyramid
- Slope-Intercept Form (of a Linear Equation)
- Solution Sets
- Solving Absolute Value Equations
- Solving Equations: Basic
- Solving Equations
- Solving Exponential Equations using Logarithms
- Solving Exponential Equations
- Solving Linear Equations
- Solving Linear Inequalities
- Solving Linear Quadratic Systems
- Solving Logarithmic Equations
- Solving Matrix Equations
- Solving Multi-Step Linear Equations with Decimals
- Solving Multi-Step Linear Equations with Fractions
- Solving Multi-Step Linear Equations
- Solving One-Step Linear Equations: Addition
- Solving One-Step Linear Equations: Division
- Solving One-Step Linear Equations with Decimals
- Solving One-Step Linear Equations with Fractions
- Solving One-Step Linear Equations with Mixed Numbers: Addition
- Solving One-Step Linear Equations with Mixed Numbers: Division
- Solving One-Step Linear Equations with Mixed Numbers: Multiplication
- Solving One-Step Linear Equations with Mixed Numbers: Subtraction
- Solving One-Step Linear Equations with Mixed Numbers
- Solving One-Step Linear Equations
- Solving One-Step Linear Inequalities
- Solving One-Step Linear Equations: Multiplication
- Solving One-Step Linear Equations: Subtraction
- Solving Problems with Vectors
- Solving Quadratic Equations by Square Roots
- Solving Quadratic Equations using Factoring
- Solving Radical Equations
- Solving Rational Equations
- Solving Systems of Linear Equations Using Elimination
- Solving Systems of Linear Equations Using Graphing
- Solving Systems of Linear Equations
- Solving Systems of Linear Equations Using Matrices
- Solving Systems of Linear Equations Using Substitution
- Solving Trigonometric Equations using Algebraic Method
- Solving Trigonometric Equations using Trigonometric Identities
- Solving Two-Step Linear Equations with Decimals
- Solving Two-Step Linear Equations with Fractions
- Solving Two-Step Linear Equations
- Solving Two-Step Linear Inequalities
- Squares Circumscribed by Circles
- Square Matrix
- Square of a Binomial
- Square Roots
- sss Inequality
- sss Postulate
- sss Similarity
- Standard Deviation
- Standard Form (of a Linear Equation)
- Statistical Questions
- Stem-and-Leaf Plots
- Step Function
- Subtracting Fractions with Like Denominators
- Subtracting Fractions with Unlike Denominators
- Subtracting Fractions
- Subtraction: Whole Numbers
- Sum and Difference Identities
- Sum and Difference of Cubes
- Sum of the First n Terms of a Geometric Sequence
- Sum of the First n Terms of a Geometric Series
- Sum of the First n Terms of an Arithmetic Sequence
- Sum of the First n Terms of an Arithmetic Series
- Sum of the First n Terms of a Series
- Sum-to-Product and Product-to-Sum Identities
- Supplementary Angles
- Supplement Postulate
- Surface Area
- Surface Area of a Cone
- Surface Area of a Cylinder
- Surface Area of a Prism
- Surface Area of a Pyramid
- Surface Area of a Sphere
- Symbolic Logic
- Systems of Linear Equations
- Systems of Linear Inequalities
- Tangent Function
- Tangent of an Angle
- Tangent Line
- Tangent to a Circle
- Taylor Series
- Temperature
- Term of a Sequence
- Terminating and Repeating Decimals
- Tessellations
- 30-60-90 Triangles
- Traceability of Graphs
- Transcendental Numbers
- Transformation of Graphs using Matrices - Translation
- Transformation of Graphs using Matrices - Dilation
- Transformation of Graphs using Matrices - Reflection
- Transformation of Graphs using Matrices - Rotations
- Transformation of Graphs using Matrices
- Transformations of Functions
- Transformations of Graphs
- Translations
- Transversal
- Triangle Angle Bisector Theorem
- Triangle Inequality Theorem
- Triangle Midsegment Theorem
- Triangle Proportionality Theorem
- Trigonometric Functions
- Trigonometric Identities
- Trigonometric Ratios
- Trigonometric Values for Common Angles
- Two Dimensional Views of Three Dimensional Objects
- Unit Analysis
- Unit Vectors
- Using Expected Values to Make Decisions
- Using Probabilities to Make Fair Decisions
- Values of Trigonometric Ratios for Common Angles
- Values of Trigonometric Ratios for Standard Angles
- Variation of Data
- Venn Diagrams
- Vertex of a Parabola
- Vertical Angles
- Vertical Angles Theorem
- Vertical Line Test
- Vertical Lines
- Volume of a Cone
- Volume of a Cylinder
- Volume of a Prism
- Volume of a Pyramid
- Volume of a Sphere
- Weight Mass
- Whole Numbers
- Word Problems: Area and Perimeter of a Rectangle
- Word Problems: Equivalent Expressions
- Word Problems: Expected Value
- Word Problems Inverse Variation
- Word Problems Involving Decimals
- Word Problems Involving Integers
- Word Problems Involving One Step Linear Equations
- Word Problems Involving the Distributive Property
- Word Problems Involving the Mean of a Data Set
- Word Problems Involving Percent
- Word Problems Two Step Linear Equations
- Word Problems Involving Width, Length and Area
- Word Problems: Linear Models
- Word Problems: Plotting Points
- Word Problems: Quadratic Equations
- Word Problems: Ratios
- Word Problems: Work and Workers
- Word Problems
- Writing Number Patterns in Function Notation
- Writing Systems of Linear Equations from Word Problems
- x -Intercepts of a Quadratic Function
- x -Intercepts
- y -Intercepts a2 level
- y -Intercepts
- Yang Huis Triangle
- Zero Exponents
- Zero to the Power of Zero
- Zero Product Property

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QuickMath will automatically answer the most common problems in algebra, equations and calculus faced by high-school and college students.

- The algebra section allows you to expand, factor or simplify virtually any expression you choose. It also has commands for splitting fractions into partial fractions, combining several fractions into one and cancelling common factors within a fraction.
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## Answered Problems By Math Tutors

A soccer coach wants to know how many hours a week his players spend training at home. He has 20 players and he decides to ask the first 4 players to arrive at Monday's soccer practice how many hours they spend training per week. He then calculated that they spend an average of 10 hour per week. Therefore, he assumed that all the players train 10 hours per week. Is this an example of a simple random sample?

A No, because each student did not have an equal chance of being selected.

B Yes, because each student had an equal chance of being selected.

C No, because he did not sample every soccer player.

D Yes, the minimum number of students sampled need to be four for it to be a simple random sample.

The figure shows the graph of f.

(b) Which of the cx-values A, B, C, D, E, F and G appear to be inflection points of f?

The diagram shows two rectangles, A and B.

All measurements are in centimetres.

The area of rectangle A is equal to the area of rectangle B.

Find an expression for y in terms of w.

George's page contains twice as many typed words as Bill's page and Bill's page contains 50 fewer words than Charlie's page. If each person can type 60 words per minute, after one minute, the difference between twice the number of words on Bill's page and the number of words on Charlie's page is 210. How many words did Bill's page contain initially?

Bill's page initially contained words.

Simplify 2sin(5x)cos(3x) - sin(2x) to one an expression containing one trigonometric function. Then graph the original function and your simplified version to verify they are identical. Enclose arguments of functions in parentheses. For example, sin(2x).

2sin(5x)cos(3x)-sin(2x)=

A health psychologist was interested in the effects of vitamin supplements on the immune system. Three groups of adults were exposed (in a highly ethical way) to the cold virus; one group took no supplements for a week before exposure, another had vitamin C supplements, and a third had multivitamins (excluding C). The severity of the cold was measured as a percentage (0% = not contracted, 100% very severe symptoms). The psychologist also measured the number of cigarettes that each person smoked per day, as smoking suppresses the immune system. The psychologist was interested in the differences in the severity of the illnesses across different vitamin groups accounting for cigarette usage. What technique should be used to analyse these data?

A. Two-way repeated-measures ANOVA

B. Two-way independent ANOVA

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That’s because Khan Academy has over 100,000 free practice questions. And they’re even better than traditional math worksheets – more instantaneous, more interactive, and more fun!

## Just choose your grade level or topic to get access to 100% free practice questions:

Kindergarten, basic geometry, pre-algebra, algebra basics, high school geometry.

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## Statistics and probability

High school statistics, ap®︎/college statistics, precalculus, differential calculus, integral calculus, ap®︎/college calculus ab, ap®︎/college calculus bc, multivariable calculus, differential equations, linear algebra.

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## Frequently Asked Questions about Khan Academy and Math Worksheets

Why is khan academy even better than traditional math worksheets.

Khan Academy’s 100,000+ free practice questions give instant feedback, don’t need to be graded, and don’t require a printer.

## What do Khan Academy’s interactive math worksheets look like?

Here’s an example:

## What are teachers saying about Khan Academy’s interactive math worksheets?

“My students love Khan Academy because they can immediately learn from their mistakes, unlike traditional worksheets.”

## Is Khan Academy free?

Khan Academy’s practice questions are 100% free—with no ads or subscriptions.

## What do Khan Academy’s interactive math worksheets cover?

Our 100,000+ practice questions cover every math topic from arithmetic to calculus, as well as ELA, Science, Social Studies, and more.

## Is Khan Academy a company?

Khan Academy is a nonprofit with a mission to provide a free, world-class education to anyone, anywhere.

## Want to get even more out of Khan Academy?

Then be sure to check out our teacher tools . They’ll help you assign the perfect practice for each student from our full math curriculum and track your students’ progress across the year. Plus, they’re also 100% free — with no subscriptions and no ads.

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## Choose Your Test

Sat / act prep online guides and tips, the 5 best homework help websites (free and paid).

Other High School , General Education

Listen: we know homework isn’t fun, but it is a good way to reinforce the ideas and concepts you’ve learned in class. But what if you’re really struggling with your homework assignments?

If you’ve looked online for a little extra help with your take-home assignments, you’ve probably stumbled across websites claiming to provide the homework help and answers students need to succeed . But can homework help sites really make a difference? And if so, which are the best homework help websites you can use?

Below, we answer these questions and more about homework help websites–free and paid. We’ll go over:

- The basics of homework help websites
- The cost of homework help websites
- The five best homework websites out there
- The pros and cons of using these websites for homework help
- The line between “learning” and “cheating” when using online homework help
- Tips for getting the most out of a homework help website

So let’s get started!

## The Basics About Homework Help Websites–Free and Paid

Homework help websites are designed to help you complete your homework assignments, plain and simple.

## What Makes a Homework Help Site Worth Using

Most of the best sites allow users to ask questions and then provide an answer (or multiple possible answers) and explanation in seconds. In some instances, you can even send a photo of a particular assignment or problem instead of typing the whole thing out!

Homework help sites also offer more than just help answering homework questions. Common services provided are Q&A with experts, educational videos, lectures, practice tests and quizzes, learning modules, math solving tools, and proofreading help. Homework help sites can also provide textbook solutions (i.e. answers to problems in tons of different textbooks your school might be using), one-on-one tutoring, and peer-to-peer platforms that allow you to discuss subjects you’re learning about with your fellow students.

And best of all, nearly all of them offer their services 24/7, including tutoring!

## What You Should Should Look Out For

When it comes to homework help, there are lots–and we mean lots –of scam sites out there willing to prey on desperate students. Before you sign up for any service, make sure you read reviews to ensure you’re working with a legitimate company.

A word to the wise: the more a company advertises help that veers into the territory of cheating, the more likely it is to be a scam. The best homework help websites are going to help you learn the concepts you’ll need to successfully complete your homework on your own. (We’ll go over the difference between “homework help” and “cheating” a little later!)

You don't need a golden piggy bank to use homework help websites. Some provide low or no cost help for students like you!

## How Expensive Are the Best Homework Help Websites?

First of all, just because a homework help site costs money doesn’t mean it’s a good service. Likewise, just because a homework help website is free doesn’t mean the help isn’t high quality. To find the best websites, you have to take a close look at the quality and types of information they provide!

When it comes to paid homework help services, the prices vary pretty widely depending on the amount of services you want to subscribe to. Subscriptions can cost anywhere from $2 to $150 dollars per month, with the most expensive services offering several hours of one-on-one tutoring with a subject expert per month.

## The 5 Best Homework Help Websites

So, what is the best homework help website you can use? The answer is that it depends on what you need help with.

The best homework help websites are the ones that are reliable and help you learn the material. They don’t just provide answers to homework questions–they actually help you learn the material.

That’s why we’ve broken down our favorite websites into categories based on who they’re best for . For instance, the best website for people struggling with math might not work for someone who needs a little extra help with science, and vice versa.

Keep reading to find the best homework help website for you!

## Best Free Homework Help Site: Khan Academy

- Price: Free!
- Best for: Practicing tough material

Not only is Khan Academy free, but it’s full of information and can be personalized to suit your needs. When you set up your account , you choose which courses you need to study, and Khan Academy sets up a personal dashboard of instructional videos, practice exercises, and quizzes –with both correct and incorrect answer explanations–so you can learn at your own pace.

As an added bonus, it covers more course topics than many other homework help sites, including several AP classes.

Runner Up: Brainly.com offers a free service that allows you to type in questions and get answers and explanations from experts. The downside is that you’re limited to two answers per question and have to watch ads.

## Best Paid Homework Help Site: Chegg

- Price: $14.95 to $19.95 per month
- Best for: 24/7 homework assistance

This service has three main parts . The first is Chegg Study, which includes textbook solutions, Q&A with subject experts, flashcards, video explanations, a math solver, and writing help. The resources are thorough, and reviewers state that Chegg answers homework questions quickly and accurately no matter when you submit them.

Chegg also offers textbook rentals for students who need access to textbooks outside of their classroom. Finally, Chegg offers Internship and Career Advice for students who are preparing to graduate and may need a little extra help with the transition out of high school.

Another great feature Chegg provides is a selection of free articles geared towards helping with general life skills, like coping with stress and saving money. Chegg’s learning modules are comprehensive, and they feature solutions to the problems in tons of different textbooks in a wide variety of subjects.

Runner Up: Bartleby offers basically the same services as Chegg for $14.99 per month. The reason it didn’t rank as the best is based on customer reviews that say user questions aren’t answered quite as quickly on this site as on Chegg. Otherwise, this is also a solid choice!

## Best Site for Math Homework Help: Photomath

- Price: Free (or $59.99 per year for premium services)
- Best for: Explaining solutions to math problems

This site allows you to t ake a picture of a math problem, and instantly pulls up a step-by-step solution, as well as a detailed explanation of the concept. Photomath also includes animated videos that break down mathematical concepts to help you better understand and remember them.

The basic service is free, but for an additional fee you can get extra study tools and learn additional strategies for solving common math problems.

Runner Up: KhanAcademy offers in-depth tutorials that cover complex math topics for free, but you won’t get the same tailored help (and answers!) that Photomath offers.

## Best Site for English Homework Help: Princeton Review Academic Tutoring

- Price: $40 to $153 per month, depending on how many hours of tutoring you want
- Best for: Comprehensive and personalized reading and writing help

While sites like Grammarly and Sparknotes help you by either proofreading what you write via an algorithm or providing book summaries, Princeton Review’s tutors provide in-depth help with vocabulary, literature, essay writing and development, proofreading, and reading comprehension. And unlike other services, you’ll have the chance to work with a real person to get help.

The best part is that you can get on-demand English (and ESL) tutoring from experts 24/7. That means you can get help whenever you need it, even if you’re pulling an all-nighter!

This is by far the most expensive homework site on this list, so you’ll need to really think about what you need out of a homework help website before you commit. One added benefit is that the subscription covers over 80 other subjects, including AP classes, which can make it a good value if you need lots of help!

## Best Site for STEM Homework Help: Studypool

- Best for: Science homework help
- Price: Varies; you’ll pay for each question you submit

When it comes to science homework help, there aren’t a ton of great resources out there. The best of the bunch is Studypool, and while it has great reviews, there are some downsides as well.

Let’s start with the good stuff. Studypool offers an interesting twist on the homework help formula. After you create a free account, you can submit your homework help questions, and tutors will submit bids to answer your questions. You’ll be able to select the tutor–and price point–that works for you, then you’ll pay to have your homework question answered. You can also pay a small fee to access notes, lectures, and other documents that top tutors have uploaded.

The downside to Studypool is that the pricing is not transparent . There’s no way to plan for how much your homework help will cost, especially if you have lots of questions! Additionally, it’s not clear how tutors are selected, so you’ll need to be cautious when you choose who you’d like to answer your homework questions.

## What Are the Pros and Cons of Using Homework Help Sites?

Homework help websites can be a great resource if you’re struggling in a subject, or even if you just want to make sure that you’re really learning and understanding topics and ideas that you’re interested in. But, there are some possible drawbacks if you don’t use these sites responsibly.

We’ll go over the good–and the not-so-good–aspects of getting online homework help below.

## 3 Pros of Using Homework Help Websites

First, let’s take a look at the benefits.

## #1: Better Grades Beyond Homework

This is a big one! Getting outside help with your studies can improve your understanding of concepts that you’re learning, which translates into better grades when you take tests or write essays.

Remember: homework is designed to help reinforce the concepts you learned in class. If you just get easy answers without learning the material behind the problems, you may not have the tools you need to be successful on your class exams…or even standardized tests you’ll need to take for college.

## #2: Convenience

One of the main reasons that online homework help is appealing is because it’s flexible and convenient. You don’t have to go to a specific tutoring center while they’re open or stay after school to speak with your teacher. Instead, you can access helpful resources wherever you can access the internet, whenever you need them.

This is especially true if you tend to study at off hours because of your extracurriculars, work schedule, or family obligations. Sites that offer 24/7 tutoring can give you the extra help you need if you can’t access the free resources that are available at your school.

## #3: Variety

Not everyone learns the same way. Maybe you’re more of a visual learner, but your teacher mostly does lectures. Or maybe you learn best by listening and taking notes, but you’re expected to learn something just from reading the textbook .

One of the best things about online homework help is that it comes in a variety of forms. The best homework help sites offer resources for all types of learners, including videos, practice activities, and even one-on-one discussions with real-life experts.

This variety can also be a good thing if you just don’t really resonate with the way a concept is being explained (looking at you, math textbooks!).

Not so fast. There are cons to homework help websites, too. Get to know them below!

## 3 Cons of Using Homework Help Websites

Now, let’s take a look at the drawbacks of online homework help.

## #1: Unreliable Info

This can be a real problem. In addition to all the really good homework help sites, there are a whole lot of disreputable or unreliable sites out there. The fact of the matter is that some homework help sites don’t necessarily hire people who are experts in the subjects they’re talking about. In those cases, you may not be getting the accurate, up-to-date, and thorough information you need.

Additionally, even the great sites may not be able to answer all of your homework questions. This is especially true if the site uses an algorithm or chatbot to help students…or if you’re enrolled in an advanced or college-level course. In these cases, working with your teacher or school-provided tutors are probably your best option.

## #2: No Clarification

This depends on the service you use, of course. But the majority of them provide free or low-cost help through pre-recorded videos. Watching videos or reading info online can definitely help you with your homework… but you can’t ask questions or get immediate feedback if you need it .

## #3: Potential For Scamming

Like we mentioned earlier, there are a lot of homework help websites out there, and lots of them are scams. The review comments we read covered everything from outdated or wrong information, to misleading claims about the help provided, to not allowing people to cancel their service after signing up.

No matter which site you choose to use, make sure you research and read reviews before you sign up–especially if it’s a paid service!

## When Does “Help” Become “Cheating”?

Admittedly, whether using homework help websites constitutes cheating is a bit of a grey area. For instance, is it “help” when a friend reads your essay for history class and corrects your grammar, or is it “cheating”? The truth is, not everyone agrees on when “help” crosses the line into “cheating .” When in doubt, it can be a good idea to check with your teacher to see what they think about a particular type of help you want to get.

That said, a general rule of thumb to keep in mind is to make sure that the assignment you turn in for credit is authentically yours . It needs to demonstrate your own thoughts and your own current abilities. Remember: the point of every homework assignment is to 1) help you learn something, and 2) show what you’ve learned.

So if a service answers questions or writes essays for you, there’s a good chance using it constitutes cheating.

Here’s an example that might help clarify the difference for you. Brainstorming essay ideas with others or looking online for inspiration is “help” as long as you write the essay yourself. Having someone read it and give you feedback about what you need to change is also help, provided you’re the one that makes the changes later.

But copying all or part of an essay you find online or having someone write (or rewrite) the whole thing for you would be “cheating.” The same is true for other subjects. Ultimately, if you’re not generating your own work or your own answers, it’s probably cheating.

## 5 Tips for Finding the Best Homework Help Websites for You

Now that you know some of our favorite homework help websites, free and paid, you can start doing some additional research on your own to decide which services might work best for you! Here are some top tips for choosing a homework help website.

## Tip 1: Decide How You Learn Best

Before you decide which site or sites you’re going to use for homework help, y ou should figure out what kind of learning style works for you the most. Are you a visual learner? Then choose a site that uses lots of videos to help explain concepts. If you know you learn best by actually doing tasks, choose a site that provides lots of practice exercises.

## Tip 2: Determine Which Subjects You Need Help With

Just because a homework help site is good overall doesn’t mean that it’s equally good for every subject. If you only need help in math, choose a site that specializes in that area. But if history is where you’re struggling, a site that specializes in math won’t be much help. So make sure to choose a site that you know provides high-quality help in the areas you need it most.

## Tip 3: Decide How Much One-On-One Help You Need

This is really about cost-effectiveness. If you learn well on your own by reading and watching videos, a free site like Khan Academy is a good choice. But if you need actual tutoring, or to be able to ask questions and get personalized answers from experts, a paid site that provides that kind of service may be a better option.

## Tip 4: Set a Budget

If you decide you want to go with a paid homework help website, set a budget first . The prices for sites vary wildly, and the cost to use them can add up quick.

## Tip 5: Read the Reviews

Finally, it’s always a good idea to read actual reviews written by the people using these homework sites. You’ll learn the good, the bad, and the ugly of what the users’ experiences have been. This is especially true if you intend to subscribe to a paid service. You’ll want to make sure that users think it’s worth the price overall!

## What’s Next?

If you want to get good grades on your homework, it’s a good idea to learn how to tackle it strategically. Our expert tips will help you get the most out of each assignment…and boost your grades in the process.

Doing well on homework assignments is just one part of getting good grades. We’ll teach you everything you need to know about getting great grades in high school in this article.

Of course, test grades can make or break your GPA, too. Here are 17 expert tips that’ll help you get the most out of your study prep before you take an exam.

Ashley Sufflé Robinson has a Ph.D. in 19th Century English Literature. As a content writer for PrepScholar, Ashley is passionate about giving college-bound students the in-depth information they need to get into the school of their dreams.

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## MATHSKEY OVERVIEW:

Mathskey goal is to help you find solutions with all the math problems you encounter as you go along the different topics in math. Mathskey offers help to students in Preschool, Middle school and High school level. We aim to encourage students to learn as what they deserve and experience a new way of learning that technology can offer. We can provide math answers to odd and even problems and any other math problems whether it's Pre-Algebra , Algebra 1 , Geometry , Algebra 2 , Precalculus, Trigonometry or Calculus. Mathskey homework help can teach you several techniques in solving math. Our Question & Answer community is a 24/7 helpline that will assist you with your Math homework. Mathskey offers Basic and Premium Memberships.

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