This mental math interactive worksheet is prepared for students to practice addition and subtraction up to 100.

t has of three sets of tasks, each task containing 15 examples. In the first set, students have to add 10, in the second set they have to subtract 10 and in the third set there are mixed problems.

Behind each problem is a piece of hidden picture. Student can unhide it to write the correct answer.

Learning with gaming elements is more fun and engaging for students. Motivation lasts longer, which is important for achieving the goals you set.