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
36 + 20 = ______
39 + 20 = ______
1 × 10 = ______
21 − 10 = ______
6 × 10 = ______
75 − 10 = ______
35 + 10 = ______
81 − 10 = ______
33 + 10 = ______
77 + 10 = ______
65 + 20 = ______
42 − 10 = ______
79 + 20 = ______
68 − 10 = ______
60 + 20 = ______
7 × 10 = ______
9 × 10 = ______
58 + 10 = ______
91 − 10 = ______
42 + 10 = ______
