Arithmetic Math Mission

The Arithmetic Math Mission is a set of skills on Khan Academy. This mission consists of foundational material regarding the structure, definitions, properties and operations on different types of numbers.

Mission Foundations

 * 1) Count to 100
 * 2) Comparing size
 * 3) How many objects 1
 * 4) Order by length
 * 5) Making five
 * 6) Compare groups through 10
 * 7) Measuring lengths 1
 * 8) Comparing numbers through 10
 * 9) Measuring lengths 2
 * 10) Making ten
 * 11) Put together
 * 12) Teen numbers 1
 * 13) Measuring lengths with different units
 * 14) Making ten 2
 * 15) Counting objects
 * 16) Take apart
 * 17) Understanding 2-digit numbers
 * 18) Addition and subtraction within 10
 * 19) Comparing whole numbers
 * 20) Comparing two-digit numbers 1
 * 21) Tens and ones
 * 22) Add within 100: Level 1
 * 23) Add within 100: Level 2
 * 24) Rounding to the nearest ten or hundred
 * 25) Meaning of multiplication
 * 26) Solving basic multiplication and division equations
 * 27) Meaning of division
 * 28) Relate division to multiplication
 * 29) Comparing fractions with the same denominator
 * 30) Comparing fractions with the same numerator
 * 31) Two-step word problems with addition, subtraction, multiplication, and division
 * 32) Place value
 * 33) Understanding place value
 * 34) Understanding whole number representations
 * 35) Multiplying 4 digits by 1 digit with visual models
 * 36) Divisibility intuition
 * 37) Rounding whole numbers
 * 38) Factor pairs
 * 39) Identifying factors and multiples
 * 40) Understanding multiplying fractions and whole numbers
 * 41) Unit sense
 * 42) Multiplying and dividing whole numbers by powers of 10
 * 43) Multiplying and dividing decimals by powers of 10
 * 44) Understanding multiplying fractions by fractions
 * 45) Regrouping whole numbers
 * 46) Patterns in zeros
 * 47) Greatest common factor
 * 48) Positive and zero exponents
 * 49) Representing ratios
 * 50) Ratio word problems
 * 51) Rate problems 0.5
 * 52) Percentage word problems 1
 * 53) Understanding addition and subtraction with negative numbers
 * 54) Rules for multiplying and dividing negative numbers
 * 55) Positive exponents with positive and negative bases
 * 56) Positive and zero exponents with positive and negative bases
 * 57) Positive and negative exponents
 * 58) Scientific notation intuition
 * 59) Scientific notation
 * 60) Measurement precision

Addition and subtraction

 * 1) Addition within 5
 * 2) Subtraction within 5
 * 3) Addition within 20
 * 4) Subtraction within 20
 * 5) Addition within 100
 * 6) Addition within 1000
 * 7) Subtraction within 100
 * 8) Subtraction within 1000

Multiplication and division

 * 1) Whole numbers on the number line
 * 2) Multiplying 1-digit numbers
 * 3) Basic division
 * 4) 1-digit division
 * 5) Comparing with multiplication
 * 6) Multiplication and division word problems
 * 7) Multiply by tens
 * 8) Multiplication without carrying
 * 9) Multiplication with carrying
 * 10) Multiplying 2 digits by 2 digits
 * 11) Multi-digit multiplication
 * 12) Multi-digit division without remainders
 * 13) Division with remainders
 * 14) Division by 2 digits
 * 15) Multi-digit division
 * 16) Multiplying 2 digits by 2 digits with area models

Negative numbers and absolute value

 * 1) Negative numbers on the number line
 * 2) Negative numbers on the number line without reference to zero
 * 3) Ordering negative numbers
 * 4) Number opposites
 * 5) Adding negative numbers
 * 6) Adding and subtracting negative numbers
 * 7) Interpreting negative numbers
 * 8) Multiplying and dividing negative numbers
 * 9) Finding absolute values
 * 10) Comparing absolute values
 * 11) Interpreting absolute value
 * 12) Constructing and interpreting absolute value

Decimals

 * 1) Writing and interpreting decimals
 * 2) Comparing decimal place value
 * 3) Money and decimal place value intuition
 * 4) Regrouping decimals
 * 5) Decimals on the number line 1
 * 6) Decimals on the number line 2
 * 7) Decimals on the number line 3
 * 8) Comparing decimals 1
 * 9) Comparing decimals 2
 * 10) Ordering decimals
 * 11) Adding decimals 0.5
 * 12) Adding decimals 1
 * 13) Adding decimals 2
 * 14) Subtracting decimals 0.5
 * 15) Subtracting decimals
 * 16) Subtracting decimals 2
 * 17) Adding and subtracting decimals word problems
 * 18) Multiplying decimals 1
 * 19) Multiplying decimals 2
 * 20) Dividing completely
 * 21) Dividing decimals 1
 * 22) Dividing decimals 2
 * 23) Dividing decimals 3
 * 24) Dividing decimals 4
 * 25) Converting fractions to decimals
 * 26) Converting decimals to fractions 1
 * 27) Converting decimals to fractions 2
 * 28) Converting decimals to percents
 * 29) Converting percents to decimals
 * 30) Finding percents
 * 31) Discount, tax, and tip word problems
 * 32) Markup and commission word problems
 * 33) Rounding decimals
 * 34) Significant figures
 * 35) Fractions as division by 10 or 100
 * 36) Understanding moving the decimal
 * 37) Adding and subtracting negative fractions, decimals, and percents

Fractions

 * 1) Recognizing fractions 1
 * 2) Identifying numerators and denominators
 * 3) Fractions on the number line 1
 * 4) Using fractions to divide pizzas, pies, and cakes
 * 5) Visualizing equivalent fractions
 * 6) Fractions cut and copy 1
 * 7) Simplifying fractions
 * 8) Equivalent fractions
 * 9) Equivalent fractions 2
 * 10) Comparing fractions with the same numerator or denominator
 * 11) Comparing fractions with different numerators and denominators
 * 12) Ordering fractions
 * 13) Decomposing fractions
 * 14) Adding fractions with common denominators
 * 15) Subtracting fractions with common denominators
 * 16) Adding and subtracting fractions with like denominators word problems
 * 17) Adding fractions with 10 and 100 as denominators
 * 18) Adding fractions with unlike denominators
 * 19) Subtracting fractions with unlike denominators
 * 20) Adding and subtracting fractions with unlike denominators
 * 21) Adding and subtracting fractions with unlike denominators word problems
 * 22) Multiplying fractions by whole numbers
 * 23) Multiplying positive fractions
 * 24) Multiplying positive and negative fractions
 * 25) Fraction multiplication as scaling
 * 26) Multiplying fractions and whole numbers word problems
 * 27) Multiplying fractions by fractions word problems
 * 28) Converting mixed numbers and improper fractions
 * 29) Fractions on the number line 2
 * 30) Comparing fractions and mixed numbers
 * 31) Fractions cut and copy 2
 * 32) Positive and negative fractions on the number line
 * 33) Adding and subtracting mixed numbers with like denominators
 * 34) Adding and subtracting mixed numbers with unlike denominators
 * 35) Multiplying mixed numbers
 * 36) Converting fractions to decimals
 * 37) Converting decimals to fractions 1
 * 38) Converting decimals to fractions 2
 * 39) Writing fractions as repeating decimals
 * 40) Understanding fractions as division
 * 41) Dividing fractions by whole numbers
 * 42) Dividing whole numbers by fractions
 * 43) Division with fractions and whole numbers word problems
 * 44) Understanding dividing fractions by fractions
 * 45) Dividing positive fractions
 * 46) Dividing positive and negative fractions
 * 47) Dividing fractions by fractions word problems

Telling time

 * 1) Telling time with a labeled clock
 * 2) Telling time without labels

Please see other Math missions here.