Learn to Add and Subtract up to 10. Preschool game for learning addition and subtraction, ideal for 4-year-olds who do easy finger-pointing. Perform the first additions and subtractions with everyday objects, such as guitars, apples, bells or phones. The operation is represented by the number of objects you want to add or subtract. In this way, you can help children understand what addition or subtraction is, by adding or removing the objects to the initial set. Choose the resulting number at the bottom to learn how to add and subtract with this game of first additions.