Pyramid War is a card game for kids and one of the many math facts games on this site. This game is a fun alternative to Addition War. I got the idea from “Games for Math”. Use the cards to create the pyramid of 6 rows. Make sure each row overlaps the previous row. Only the exposed cards can be removed. Either one card that has a value of ten or two cards the sum up to ten can be removed. The goal is to remove all of the cards.