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Addition within 20 Activities

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Addition within 20

Knock Off Numbers for Mental Math Practice!

This activity is a great starting point for practicing mental math because it is quick, easy and involves only simple addition facts.

Math Solitaire for Two

Engage your third-grader in this version of the classic game and she will get lots of practice using mental math to solve addition and subtraction problems.

Math Facts Secret Codes

For most second graders, a good secret code is just about irresistible. Here's one that builds math facts while you're at it!

Turn Over Ten: An Addition Game

Make practicing addition facts more fun and teach your child the helpful strategy of adding quickly to 10 in this fun and easy-to-make card game!

Play Terrific Tens Go Fish!

Make practicing addition facts more fun and teach your child some helpful strategies with this spin off of the traditional "Go Fish" game.

Halloween Party Game

Prepare for some scary Halloween counting practice! This game encourages players to knock down cylinders and then subtract to determine their scores.

Addicted to Addition

Practice addition with your child in a whole new way when you battle to defend your cards in this competitive game. Math has never been so fun!

Shake those dice and try to roll big numbers in this first grade math game. Practice addition in a new, fun way!

Equation Card Game

Create equations in this strategic math card game. Your second or third grader can practice addition, subtraction, multiplication, and division in a new way!

This first grade addition math game helps your child use critical thinking skills while practicing his computation.

Ring the Bottle: A Math Carnival Game

Nothing chases the blues away like a trip to the boardwalk. Bring the fun home with this do-it-yourself version that sneaks in some math practice.

Estimation Game

Help your child get comfortable with the concept of estimation, which will come in handy during everything from standardized tests to future shopping trips!

Elevens Card Game

Looking for a cool game to help your first grader learn her 11s? Look no further than this clever one-person card game.

Addition has never been much fun as it is with this super-risky, ultra-competitive card game. The player who ends up with the lowest score is the winner!

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