We played a new math game today. It practices both addition and subtraction, and encourages kids to check their work.
1. Remove K, Q, J, Joker, and 10 cards from the deck.
2. Draw 6 cards for three digit numbers. For 4 digit numbers, draw eights cards.
3. Arrange your cards for subtraction, with three on top, and three on the bottom.
4. Subtract to get your answer.
5. Flip it. Take the answer, and add it to the second number in the equation. If your math is correct, your answer should match the top number from your subtraction.
Here is a student example:
1. Remove K, Q, J, Joker, and 10 cards from the deck.
2. Draw 6 cards for three digit numbers. For 4 digit numbers, draw eights cards.
3. Arrange your cards for subtraction, with three on top, and three on the bottom.
4. Subtract to get your answer.
5. Flip it. Take the answer, and add it to the second number in the equation. If your math is correct, your answer should match the top number from your subtraction.
Here is a student example: