Early math

Explore

Practice
Mission
Want a personalized early math experience?
Missions recommend what to learn next, help you remember what you’ve learned by mixing skills, and save your progress.
Sign up
Learn more
Need to study for your next test?
See all 101 practice exercises

Counting

Learn how to count. Say how many objects you see.
Counting
Numbers 0 to 120
Counting objects
Comparing small numbers

Addition and subtraction intro

Learn the basics of adding and subtracting.
What is addition? What is subtraction?
Making small numbers
Making 10
Put together, take apart
Relate addition and subtraction
Addition and subtraction word problems

Place value (tens and hundreds)

Learn about tens and hundreds. Compare 2-digit and 3-digit numbers.
Teens
Tens
Comparing 2-digit numbers
Hundreds
Comparing three-digit numbers

Addition and subtraction within 20

Learn to add and subtract numbers that are 20 or less.
Addition within 20
Subtraction within 20
Equal sign
Missing number within 20
Word problems within 20
Word problems with "more" and "fewer"
Repeated addition

Addition and subtraction within 100

Learn to add and subtract two-digit numbers 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
Word problems with "more" and "fewer" (within 100)
Skip-counting
Addition and subtraction missing value problems

Addition and subtraction within 1000

Learn to add and subtract two- and three-digit numbers within 1000.
Adding 1s, 10s, and 100s
Subtracting 1s, 10s, and 100s
Strategies for adding 2- and 3-digit numbers

Measurement and data

Learn how to measure length, tell time, count money, and make graphs.
Length and size
Measuring length
Comparing and estimating length
Length word problems
Picture graphs
Bar graphs
Line plots
Time
Money

Geometry

Learn about triangles, circles, rectangles, and other shapes.
Basic shapes
Properties of shapes
Composing shapes
Fractions of shapes
​Duck Duck Moose is now part of Khan Academy! Download their 21 award-winning apps for young children at duckduckmoose.com

Staff picks

Count tens
Making small numbers in different ways
Understanding place value when adding tens
Measuring length: golden statue
Recognizing shapes

Get Started

Counting
Learn to count from 0 to 20.
Start learning
Community questions
Practice