If your kids are struggling with mathematics in school, or you just feel like they could really use some extra help with their subtraction skills, then this worksheet is just what you need. The math problems your kids face in school will not be enough to help them fully understand mathematics. With some one-on-one time with you, they will enjoy the subject even more. In this worksheet, your kids will need to find the missing number in all the questions. Help them check the correct answer.