Khan Academy Wiki

8th grade (U.S.) Math Mission

1,860pages on
this wiki
Add New Page
Talk0 Share
The 8th Grade (U.S.) Math Mission is a set of skills on Khan Academy. This mission consists of foundational material, completes sophistication with operations on many types of numbers, introduces some important ideas for functions and completes some of the important concepts needed for geometry, data analysis and statistics.
8th Grade U.S.

The 8th grade (U.S.) Math Mission dashboard.

Mission Specifics

Mission Foundations

  1. Area of a circle
  2. Division by 2 digits
  3. Evaluating expressions with variables word problems
  4. Volume word problems with fractions and decimals
  5. Surface area using nets
  6. Identifying terms, factors, and coefficients in expressions
  7. Dividing decimals 4
  8. Multiplying decimals 3
  9. Whole number exponents with integer bases
  10. Equivalent expressions with distribution and combining like terms
  11. Valid claims
  12. Multiplying and dividing negative numbers
  13. Rectangles on the coordinate plane
  14. Two-step equations
  15. Coordinate plane problems in all four quadrants
  16. Multi-digit multiplication
  17. Reflecting points on the coordinate plane
  18. Radius, diameter, and circumference
  19. Rewriting decimals as fractions 2
  20. Converting fractions to decimals
  21. Vertical angles
  22. Complementary and supplementary angles

Numbers and operations

  1. Writing fractions as repeating decimals
  2. Converting repeating decimals to fractions 1
  3. Converting multi-digit repeating decimals to fractions
  4. Square roots of perfect squares
  5. Cube roots
  6. Equations with square roots and cube roots
  7. Roots of decimals and fractions
  8. Square and cube challenge
  9. Classify numbers: rational & irrational
  10. Classifying numbers
  11. Approximating square roots
  12. Comparing irrational numbers
  13. Comparing irrational numbers with a calculator
  14. Positive and negative exponents
  15. Using exponent rules to evaluate expressions
  16. Properties of exponents
  17. Multiplication and division with powers of ten
  18. Approximating with powers of 10
  19. Scientific notation intuition
  20. Scientific notation
  21. Multiplying and dividing scientific notation
  22. Adding and subtracting in scientific notation
  23. Computing in scientific notation

Solving equations with one unknown

  1. Equations with variables on both sides
  2. Equations with parentheses
  3. Linear equations with one, zero, or infinite solutions
  4. Equation practice: summing integers
  5. Age word problems

Linear equations and functions

  1. Rates and proportional relationships
  2. Graphing proportional relationships
  3. Checking solutions to two-variable linear equations
  4. Graphing solutions to two-variable linear equations
  5. Intercepts from a graph
  6. Intercepts from a linear equation
  7. Slope intuition
  8. Slope from a graph
  9. Slope from two solutions
  10. Slope from an equation in slope-intercept form
  11. Slope from an equation in standard form
  12. Graph from slope-intercept equation
  13. Slope-intercept equation from a graph
  14. Slope-intercept equation from two solutions
  15. Evaluating functions
  16. Writing function rules from equations
  17. Views of a function
  18. Comparing linear functions
  19. Interpreting linear graphs word problems
  20. Interpreting linear formulas word problems
  21. Comparing linear functions word problems
  22. Graphing linear functions word problems
  23. Constructing linear functions word problems
  24. Linear models word problems
  25. Recognizing functions from tables
  26. Recognizing functions from graphs
  27. Linear and nonlinear functions
  28. Interpreting graphs of linear and nonlinear functions

Systems of equations

  1. Solving systems of equations graphically
  2. Solving systems of linear equations with elimination 1
  3. Solving systems of linear equations with elimination 2
  4. Solving systems of linear equations with substitution
  5. Solving systems of two linear equations
  6. Analyze solutions to linear systems graphically
  7. Systems with one, zero, or infinite solutions
  8. Systems of linear equations word problems


  1. Equation practice with segment addition
  2. Equation practice with midpoints
  3. Equation practice with vertical angles
  4. Congruent angles
  5. Parallel lines 1
  6. Equation practice with congruent angles
  7. Equation practice with angle addition
  8. Finding angle measures 1
  9. Finding angle measures 2
  10. Pythagorean theorem
  11. Pythagorean theorem word problems
  12. Pythagorean theorem in 3D
  13. Distance formula
  14. Pythagorean Theorem proofs
  15. Solid geometry
  16. Volume word problems with cones, cylinders, and spheres
  17. Perform translations
  18. Perform rotations
  19. Perform reflections
  20. Perform dilations
  21. Exploring rigid transformations and congruence
  22. Exploring angle-preserving transformations and similarity
  23. Volumes of cones, cylinders, and spheres

Data and modeling

  1. Making good scatter plots
  2. Positive and negative linear correlations from scatter plots
  3. Estimating equations of lines of best fit, and using them to make predictions
  4. Eyeballing the line of best fit
  5. Interpreting scatter plots
  6. Constructing scatter plots
  7. Linear models of bivariate data
  8. Two-way frequency tables
  9. Two-way relative frequency tables
  10. Interpreting two-way tables

Users can view other Math Missions here.

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.