For best results, print the cards on cardstock and laminate.
How to Play: 2 players. Deal the cards to the two players until there are no cards left. Keep the cards face down – do not look at them. Both players now turn their top card face up and put them on the table. Students then add the 2 numbers together to determine the sum. Whoever turned the higher sum card takes both cards and adds them (face down) to the bottom of their packet. Then both players turn up their next card and so on. If the turned up cards are equal there is a war. The tied cards stay on the table and both players play the next card of their pile face down and then another card face-up. Whoever has the higher sum of the new face-up cards wins the war and adds all six cards face-down to the bottom of their packet. If the new face-up cards are equal as well, the war continues: each player puts another card face-down and one face-up. The war goes on like this as long as the face-up cards continue to be equal. As soon as they are different the player of the higher sum card wins all the cards in the war.
Common Core Standards:
Represent addition and subtraction with objects, fingers, mental images, drawings, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.
For any number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by using objects or drawings, and record the answer with a drawing or equation.