Preschoolers can only comprehend subtraction in the most basic sense. It's easy to demonstrate with commonplace items. For instance, if I have three blocks and "take away" one, how many blocks remain? Or, if a youngster gets five dollars to spend at the shop and purchases a two-dollar item, how much money will they have left over?Only the digits one through ten are used in the following subtraction worksheets. Encourage the kids to tick off the appropriate amount of items. This makes the concept of "take away" much more visual.