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
82 + 20 = ______
6 × 10 = ______
61 + 10 = ______
42 + 10 = ______
65 + 10 = ______
40 + 20 = ______
85 − 10 = ______
8 × 10 = ______
9 × 10 = ______
99 − 10 = ______
1 × 10 = ______
40 − 10 = ______
2 × 10 = ______
15 + 20 = ______
14 + 20 = ______
40 + 10 = ______
35 + 10 = ______
74 − 10 = ______
7 × 10 = ______
47 + 20 = ______
