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100percent2

The current design of the World of Math.

The World of Math is a Math mission on Khan Academy. This mission has the most exercises (1233) and details on the number of skills can be found here.

It is divided into even more missions:

K-8th Grade
  1. K-2nd
  2. 3rd grade (U.S.)
  3. 4th grade (U.S.)
  4. 5th grade (U.S.)
  5. 6th grade (U.S.)
  6. 7th grade (U.S.)
  7. 8th grade (U.S.)
Fundamentals
  1. Early math
  2. Arithmetic Math Mission
  3. Pre-algebra Math Mission
  4. Basic geometry Math Mission
High school and beyond
  1. Algebra basics
  2. Algebra I
  3. Geometry
  4. Algebra II
  5. Trigonometry
  6. Probability and statistics
  7. Precalculus
  8. Differential calculus
  9. Integral calculus
  10. Differential equations

Users can view their progress on this mission on their Learning Dashboard.


Mission Total Skills Challenge Patches Mission Skills Foundation Skills
Early math Math MissionEarly math exercises (93)
  1. Counting (12)
  2. Place value and patterns (8)
  3. Addition and subtraction (51)
  4. Measurement and data (14)
  5. Geometry (8)

93 mission skills

No mission foundations

3rd grade (U.S.) Math Mission3rd grade exercises (62)
  1. Addition and subtraction (3)
  2. Multiplication and division (12)
  3. Fractions (13)
  4. Measurement and geometry (24)
  5. Place value and rounding (1)
  6. Expressions and patterns (3)

56 mission skills

Mission foundations count (6)

4th grade (U.S.) Math Mission4th grade exercises (85)
  1. Addition and subtraction (2)
  2. Multiplication and division (14)
  3. Fractions (23)
  4. Measurement and data (9)
  5. Geometry (16)
  6. Factors, multiples and patterns (6)
  7. Place value and rounding (4)

74 mission skills

Mission foundations count (11)

5th grade (U.S.) Math Mission5th grade exercises (82)
  1. Arithmetic operations (13)
  2. Fractions (16)
  3. Place value and decimals (14)
  4. Measurement and data (11)
  5. Geometry (4)
  6. Algebraic thinking (4)

62 mission skills

Mission foundations count (20)

6th grade (U.S.) Math Mission6th grade exercises (126)
  1. Ratios, rates, and percentages (9)
  2. Arithmetic operations (16)
  3. Negative numbers (20)
  4. Properties of numbers (4)
  5. Variables and expressions (22)
  6. Geometry (15)
  7. Data and statistics (22)

108 mission skills

Mission foundations count (18)

7th grade (U.S.) Math Mission7th grade exercises (105)
  1. Rates, proportional relationships, and ratios (7)
  2. Negative numbers: addition and subtraction (16)
  3. Negative numbers: multiplication and division (13)
  4. Fractions, decimals, and percentages (8)
  5. Variables and expressions (10)
  6. Geometry (15)
  7. Statistics and probability (12)

81 mission skills

Mission foundations count (24)

8th grade (U.S.) Math Mission8th grade exercises (111)
  1. Numbers and operations (17)
  2. Solving equations with one unknown (5)
  3. Two-variable linear equations and functions (27)
  4. Systems of equations (10)
  5. Geometry (23)
  6. Data and modeling (7)

88 mission skills

Mission foundations count (23)

Arithmetic Math MissionArithmetic exercises (119)
  1. Addition and subtraction (8)
  2. Multiplication and division (16)
  3. Negative numbers and absolute value (12)
  4. Decimals (37)
  5. Fractions (47)
  6. Telling time (2)

119 mission skills

No mission foundations

Pre-algebra Math MissionPre-algebra exercises (158)
  1. Negative numbers and absolute value (12)
  2. Factors and multiples (11)
  3. Decimals (37)
  4. Fractions (45)
  5. Ratios, proportions, units, and rates (5)
  6. Applying mathematical reasoning (17)
  7. Exponents, radicals, and scientific notation (17)
  8. Arithmetic properties (10)
  9. Measurement (7)

158 mission skills

No mission foundations

Algebra basics Math MissionAlgebra basics exercises (89)
  1. Foundations (31)
  2. Algebraic expressions (8)
  3. Linear equations and inequalities (16)
  4. Graphing lines and slope (13)
  5. Systems of equations (3)
  6. Expressions and equations with exponents (2)
  7. Quadratics and polynomials (10)
  8. Equations and geometry (6)

89 mission skills

No mission foundations

Algebra I Math MissionAlgebra I exercises (158)
  1. Introduction to algebra (15)
  2. Linear equations (19)
  3. Linear inequalities (7)
  4. Two-variable linear equations and introduction to functions (25)
  5. Systems of equations and inequalities (17)
  6. Multiplying and factoring expressions (12)
  7. Quadratic equations (15)
  8. Exponent expressions and equations (14)
  9. Functions (19)
  10. Ratios and proportions (7)

144 mission skills

Mission foundations count (14)

Geometry Math MissionGeometry exercises (110)
  1. Angles and intersecting lines (14)
  2. Congruence (7)
  3. Similarity (7)
  4. Right triangles and trigonometry (10)
  5. Perimeter, area, and volume (18)
  6. Circles (7)
  7. Special properties and part of triangles (1)
  8. Quadrilaterals (2)
  9. Transformations (15)
  10. Analytic geometry (7)
  11. Geometric constructions (4)

92 mission skills (MF repeated in analyt. geo.)

Mission foundations count (19)

Algebra II Math MissionAlgebra II exercises (140)
  1. Systems of equations and inequalities (13)
  2. Functions and their graphs (24)
  3. Polynomial and rational functions (26)
  4. Rational expressions (23)
  5. Exponential and logarithmic functions (8)
  6. Logarithms (4)
  7. Imaginary and complex numbers (7)
  8. Conic sections (12)
  9. Matrices (7)

123 mission skills

Mission foundations count (17)

Trigonometry Math MissionTrigonometry exercises (43)
  1. Basic trigonometry (7)
  2. Unit circle definition of trig functions (9)
  3. Graphs of trig functions (7)
  4. Trig identities and examples (10)

33 mission skills

Mission foundations count (10)

Probability and statistics Math MissionProbability and statistics exercises (58)
  1. Independent and dependent events (10)
  2. Probability and combinatorics (6)
  3. Statistical studies (7)
  4. Descriptive statistics (10)
  5. Random variables and probability distributions (5)
  6. Regression (5)
  7. Inferential statistics (4)

46 mission skills

Mission foundations count (12)

Precalculus Math MissionPrecalculus exercises (74)
  1. Vectors (8)
  2. Matrices (17)
  3. Parametric equations and polar coordinates (0)
  4. Imaginary and complex numbers (14)
  5. Probability and combinatorics (8)
  6. Sequences, series and induction (11)
  7. Hyperbolic functions (1)
  8. Limits (5)

64 mission skills

Mission foundations count (10)

Differential calculus Math MissionDifferential calculus exercises (48)
  1. Limits (9)
  2. Taking derivatives (19)
  3. Derivative applications (14)

42 mission skills

Mission foundations count (6)

Integral calculus Math MissionIntegral calculus exercises (56)
  1. Integrals (15)
  2. Integration techniques (6)
  3. Integration applications (8)
  4. Sequences, series, and function approximation (19)
  5. AP Calculus practice questions (0)

48 mission skills

Mission foundations count (8)


A list of previous math exercises that have been removed

This list contains exercises that have been removed for reasons such as removal, splitting previous exercises, or possibly for fixing bugs. As they are re-implemented, they will be removed from this list.


  1. 2D geometric models
  2. Absolute value word problems
  3. Analyzing data with dot plots
  4. Area 1
  5. Arithmetic Sequences
  6. Building fractions from unit fractions
  7. Comparing the center and spread of data distributions
  8. Comparing two-digit numbers-old
  9. Constructing and interpreting absolute value
  10. Constructing consistent and inconsistent systems
  11. Converting between point-slope and slope-intercept form
  12. Counting 2
  13. Defining sequences as functions
  14. Describing distributions with center and spread
  15. Divisibility 0.5
  16. Drawing lines
  17. Equations from tables
  18. Evaluating exponent expressions word problems
  19. Evaluating expressions with exponents
  20. Expressions with parentheses
  21. Finding probability
  22. Fraction word problems 1
  23. Fractions greater than one
  24. Geometric descriptions of real-world objects
  25. Graphically understanding solution methods to systems of equations
  26. Graphing linear equations
  27. Inequalities in one variable 1
  28. Integers on the number line
  29. Interpreting and finding intercepts of linear functions
  30. Interpreting linear relationships
  31. Modeling with one-variable equations and inequalities
  32. Modeling with two-variable equations and graphs
  33. Multiplying area with unit squares
  34. Negative number word problems
  35. Number line 1
  36. Operations with rational numbers
  37. Orders of magnitude
  38. Patterns in zeros
  39. Performing transformations on the coordinate plane
  40. Positive and negative fractions on the number line
  41. Probability space
  42. Properties of multiplication 1
  43. Properties of multiplication 2
  44. Properties of rigid transformations
  45. Quantitatively defining rigid transformations
  46. Reading and setting clocks
  47. Recognizing triangles
  48. Slope and triangle similarity
  49. Solving for the y-intercept
  50. Sorting absolute value word problems
  51. Teen numbers 2
  52. Teen numbers 3
  53. Testing solutions of equations and inequalities
  54. Testing solutions of equations and inequalities word problems
  55. Transforming polygons
  56. Triangle types
  57. Understanding 2-digit numbers
  58. Understanding multiplying fractions and whole numbers
  59. Understanding probability
  60. Understanding systems of equations word problems
  61. Understanding the mean
  62. Units and scale of graphs
  63. Variation in samples
  64. Writing expressions with exponents
  65. Writing expressions with exponents word problems
  66. Writing numbers to 1000
  67. Add within 100: Level 1
  68. Add within 100: Level 2
  69. Subtract tens
  70. Subtract within 100: Level 1
  71. Addition and subtraction word problems 1
  72. Addition and subtraction word problems 2
  73. Comparing decimals 2
  74. Evaluating arithmetic sequences 2
  75. Dilations

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