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
77 − 10 = ______
9 × 10 = ______
86 + 10 = ______
27 + 20 = ______
72 + 20 = ______
17 + 10 = ______
99 − 10 = ______
85 + 20 = ______
64 + 20 = ______
33 + 20 = ______
83 + 20 = ______
13 + 20 = ______
1 × 10 = ______
89 + 20 = ______
11 + 10 = ______
79 + 10 = ______
4 × 10 = ______
89 + 10 = ______
74 − 10 = ______
21 + 10 = ______
