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 = ______
20 + 10 = ______
2 × 10 = ______
37 + 10 = ______
11 + 10 = ______
43 + 20 = ______
47 − 10 = ______
67 + 10 = ______
74 + 20 = ______
40 + 20 = ______
90 − 10 = ______
21 − 10 = ______
87 + 20 = ______
68 − 10 = ______
3 × 10 = ______
17 + 20 = ______
59 + 10 = ______
89 − 10 = ______
1 × 10 = ______
79 + 20 = ______
