If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content
Math

Math for fun and glory

Explore

Practice
Practice for your next test
12 exercises available

Doodling in Math and more

Recreational mathematics and inspirational videos by mathemusician Vi Hart
Spirals, Fibonacci and being a plant
Doodling in math
Hexaflexagons
About pi and tau
Singing (and noises)
Mobius strips
Thanksgiving math
Infinity . . .
Other cool stuff

Puzzles

Strengthen your brain with some mind bending riddles and puzzles.
Brain teasers
Transformation Puzzles
Lights Puzzles

AMC 10

The AMC 10 is part of the series of contests administered by the MAA American Mathematics Competitions that determines the United States team in the International Math Olympiad. The AMC 10 is a 25 question, 75 minute multiple choice test for students in 10th grade or below. Two versions of the AMC 10 are offered each year. This content is brought to you by the Art of Problem Solving (www.aops.com)
2013 AMC 10 A

AIME

2003 AIME

Math warmups

Introducing key concepts using physical analogies
Expectation warmup
Random sampling warmup
Distribution warmup
Arithmetic warmups

Staff picks

4:08
Hexaflexagons
Hexaflexagons
5:26
Doodling in math: Squiggle inception
Doodling in math
6:29
2013 AMC 10 A #24
2013 AMC 10 A
18:18
Trig challenge problem: area of a hexagon
2003 AIME

Get Started

Spirals, Fibonacci and being a plant
You're feeling spirally today, and math class today is taking place in greenhouse #3...
Start learning
Community questions
Practice