Here, your child/student is encouraged to flex their mental muscles a bit more. Rather than a regular addition and subtraction exercise, this math worksheet encourages your child to be more observant. Sit with the young one and examine the dominos on the left side and their values. Next, look through the three boxes on the right side and ask your child if any of the dominos are similar to the one on the left. This exercise will require some focus and careful observation.