Early math review
Learn early elementary math—counting, shapes, basic addition and subtraction, and more.
8 units129 videos7 hours
Learn it live with a class on Puzzicle · Teachers: use it with your class
Unit 1: Counting
Numbers 0 to 120
Counting objects
Unit 2: Addition and subtraction intro
What is addition? What is subtraction?
Making small numbers
Put together, take apart
Relate addition and subtraction
Addition and subtraction word problems
Unit 3: Place value (tens and hundreds)
Tens
Comparing 2-digit numbers
Comparing three-digit numbers
Unit 4: Addition and subtraction within 20
Addition within 20
Subtraction within 20
Equal sign
Missing number within 20
Word problems within 20
Word problems with "more" and "fewer"
Unit 5: Addition and subtraction within 100
Adding 1s and 10s
Subtracting 1s and 10s
Intro to addition with 2-digit numbers
Intro to subtraction with 2-digit numbers
Strategies for adding and subtracting within 100
Addition within 100
Subtraction within 100
Word problems within 100
Adding and subtracting on number line word problems ✓ Check-ins4:27
Adding two digit numbers on a number line ✓ Check-ins3:36
Subtraction word problem: tennis balls ✓ Check-ins3:33
Addition word problem: horses ✓ Check-ins3:31
Subtraction word problem: snow ✓ Check-ins4:19
Subtraction word problem: crayons ✓ Check-ins4:25
Word problems with "more" and "fewer" (within 100)
Addition and subtraction missing value problems
Unit 6: Addition and subtraction within 1000
Skip counting by 100s
Adding 1s, 10s, and 100s
Subtracting 1s, 10s, and 100s
Strategies for adding 2- and 3-digit numbers
Adding up to four 2-digit numbers
Unit 7: Measurement and data
Length and size
Measuring length
Comparing and estimating length
Length word problems
Bar graphs
Time
Unit 8: Geometry
Basic shapes
Properties of shapes
Composing shapes
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.