Arithmetic
This Arithmetic course is a refresher of place value and operations (addition, subtraction, division, multiplication, and exponents) for whole numbers, fractions, decimals, and integers. If you are learning the content for the first time, consider using the grade-level courses for more in-depth instruction.
19 units246 videos17 hours
Learn it live with a class on Puzzicle · Teachers: use it with your class
Unit 1: Intro to multiplication
Multiplication as equal groups
Multiplication on the number line
Multiply using groups of objects
Multiplication with arrays
Commutative property of multiplication
Unit 2: 1-digit multiplication
Distributive property
Associative property of multiplication
Unit 3: Intro to division
Division intro
Relating multiplication and division
Multiplication and division word problems
Unit 4: Understand fractions
What fractions mean
Fractions on the number line
Fractions and whole numbers
Unit 5: Place value through 1,000,000
Intro to place value through 1,000
Numbers in expanded form
Regroup whole numbers
Greater place values
Unit 6: Add and subtract through 1,000,000
Visually adding within 1,000
Strategies for adding within 1,000
Strategies for subtracting within 1,000
Adding within 1,000,000
Unit 7: Multiply 1- and 2-digit numbers
Multiplication by 10s, 100s, and 1000s
Multi-digit multiplication: place value and area models
Multiply with partial products
Multiply by 10s
Multiply 2-digit numbers with area models
Multiply 2-digit numbers with partial products
Unit 8: Divide with remainders
Divide multiples of 10, 100, and 1,000 by 1-digit numbers
Division with place value
Division with area models
Multi-digit division with partial quotients
Multiplication and division word problems
Unit 9: Add and subtract fraction (like denominators)
Equivalent fractions
Common denominators
Decomposing fractions
Adding and subtracting fractions with like denominators
Adding and subtracting fractions: word problems
Mixed numbers
Unit 10: Multiply fractions
Multiplying fractions and whole numbers visually
Multiplying whole numbers and fractions
Multiplying whole numbers and mixed numbers
Multiplying fractions and whole numbers word problems
Multiplication as scaling
Multiplying fractions and whole numbers
Multiplying fractions
Multiplying mixed numbers
Area of rectangles with fractional side lengths
Unit 11: Decimals and place value
Decimal fractions
Decimal fractions greater than 1
Writing fractions as decimals
Decimal place value intro
Decimals on the number line
Decimals in expanded form
Unit 12: Add and subtract decimals
Adding decimals intro
Adding decimals (tenths and hundredths)
Subtracting decimals intro
Unit 13: Add and subtract fractions (different denominators)
Fractions with denominators of 10 and 100
Visually adding and subtracting fractions
Common denominators
Adding and subtracting fractions with unlike denominators
Adding and subtracting mixed numbers with unlike denominators
Adding and subtracting fractions with unlike denominators word problems
Unit 14: Multiply and divide multi-digit numbers
Multiply with multiples of 10, 100, and 1,000
Multi-digit multiplication
Divide with multiples of 10, 100, and 1,000
Multi-digit division
Unit 15: Divide fractions
Fractions as division
Dividing unit fractions by whole number
Dividing whole numbers by unit fractions
Dividing fractions and whole numbers word problems
Dividing fractions by fractions
Understanding division of fractions ✓ Check-ins5:42
Dividing a fraction by a whole number ✓ Check-ins3:53
Meaning of the reciprocal ✓ Check-ins4:13
Dividing a whole number by a fraction ✓ Check-ins3:05
Dividing a whole number by a fraction with reciprocal ✓ Check-ins3:36
Dividing fractions: 2/5 ÷ 7/3 ✓ Check-ins1:17
Dividing fractions: 3/5 ÷ 1/2 ✓ Check-ins3:36
Dividing mixed numbers
Unit 16: Multiply and divide decimals
Multiplying decimals and whole numbers
Multiplying decimals strategies
Multiplying decimals
Divide whole numbers to get a decimal quotient
Divide decimals by whole numbers
Unit 17: Exponents and powers of ten
Multiplying and dividing whole numbers by 10, 100, and 1,000
Multiplying and dividing decimals by 10, 100, and 1,000
Powers of 10
Multiplying and dividing with powers of 10
Intro to exponents
Order of operations with exponents
Unit 18: Add and subtract negative numbers
Intro to negative numbers
Negative symbol as opposite
Negative decimals and fractions on the number line
Absolute value
Intro to adding negative numbers
Adding negative numbers fluently
Intro to subtracting negative numbers
Subtracting negative numbers fluently
Adding & subtracting integers
Adding & subtracting negative fractions
Unit 19: Multiply and divide negative numbers
Multiply and divide integers
Multiplication & division word problems with negatives
Understanding multiplying and dividing negative fractions
Multiply & divide negative fractions
Learn this with a class
With a class on Puzzicle this course runs as a timetable of live study parties: your batch watches together and answers the check-ins, sometimes with a teacher leading.
Course content © Khan Academy, used under CC BY-NC-SA. See this course on Khan Academy.