Addition is one of the four basic operations of arithmetic. The addition of two whole numbers results in the total amount or sum of those values combined. Addition is one of the important courses of elementary school mathematics, and every infant must master simple addition Subtraction. Let's Catch is a game where you can learn mathematics. You need to add the numbers in each square, and finally get the sum of these numbers. This is a very educational game. If you want to exercise your children's computing skills, don't miss this game.