# Study Map

## Addition and Subtraction

Addition and subtraction are parts of math. People use math every day, from counting how many more chairs they need to give everyone a seat at a party to figuring out how many apples they'll have left if they have eight and use three for an apple pie. As you learn more about addition and subtraction, you start to solve longer problems that might seem difficult, but with practice, even those will be easy. By playing the games and solving the problems on the web pages included below, you can improve your adding and subtracting skills and become a math whiz. Want to practice with others? A few of these games are two-player!

• Addition & Subtraction Flashcards - In "Add & Subtract", choose a level from 1 to 7 and test yourself on addition and subtraction problems. How many can you answer correctly in two minutes?
• Addition War - Find a friend and a deck of cards to play Addition War, a game about having the bigger sum of cards than your opponent.
• Addition Worksheets Generator - Make your own addition worksheets by choosing how many problems you want and how big you want your sums to be.
• Add Like Mad - Click on number tiles to add to the number at the bottom. Solve the problems faster for bonus time!
• Base Ten Blocks - Use these blocks to investigate how you group and ungroup numbers to solve addition and subtraction problems.
• Basic Addition Tutorial - Watch this 8-minute video to help you understand good ways to think about addition.
• Get Ready to Roll with Adding and Subtracting - With just a game board, dice, and twelve small pieces, you can make a game to have fun and learn addition and subtraction with a friend.
• Helicopter Rescue for Addition and Subtraction - Play the "Count On & Back" section of the game to learn the vocabulary of addition and subtraction while saving people in your brave helicopter.
• How is Addition Like Subtraction? - This article explains how subtraction is the inverse, or opposite, of addition.
• Marble Math Addition - Learn sums up to 25 by counting marbles with a cute and fun penguin friend.
• Math Baseball - Choose addition or subtraction and a level and play ball, scoring runs by answering math problems correctly.
• Minus Mission - Shoot the blobs whose difference equals the number on your shooter. Once you can solve your math facts faster, try an even faster mode.
• Mystery Sailing the Ocean Blue Worksheet - In this color-by-number, you add the numbers in each section to find which color to use.
• Number Bonds to 100 - Use number bonds to find which number you need to add to reach 100.
• Number Chart 0 to 99 - This interactive chart shows you the order of numbers and can help you add and subtract by skipping from space to space. Color the tiles to make the solving easier.
• Relate Subtraction to Addition - Earn coins as you solve subtraction and addition problems, learning how subtraction and addition together make fact families.
• Subtraction Using Pictures - Help Farmer Joe harvest his fruits and vegetables by figuring out how of each he left after giving some away.
• Teachley Add & Subtract - Choose between addition with Addimals or subtraction with Subtractimals to practice your math facts using interactive blocks and memory.
• Two Player Math Game - Challenge a friend to show off your math skills. Check addition and subtraction, choose a level, and start solving.
• 3-Digit Addition Split - Are you feeling confident about your addition abilities? Try addition with three digits! Learn an easy technique, then solve some by yourself.