Mental Math Worksheet
Recommended for 1st Grade — 5th Grade
Mental Math Worksheet
Name: ____________________Date: ____________
Instructions: Using mental strategies like making ten, doubling, and compensation to compute quickly.
20 problems
21 + 10 = ______
65 − 10 = ______
39 + 10 = ______
64 + 10 = ______
3 × 10 = ______
12 + 10 = ______
39 − 10 = ______
86 + 10 = ______
95 − 10 = ______
38 − 10 = ______
9 × 10 = ______
42 − 10 = ______
27 + 10 = ______
54 − 10 = ______
36 + 10 = ______
31 + 20 = ______
7 × 10 = ______
81 + 10 = ______
88 + 20 = ______
33 + 20 = ______
