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
81 + 20 = ______
70 + 10 = ______
86 − 10 = ______
59 + 10 = ______
77 + 10 = ______
35 + 20 = ______
34 + 10 = ______
67 + 20 = ______
41 + 20 = ______
6 × 10 = ______
63 + 20 = ______
2 × 10 = ______
57 − 10 = ______
29 + 20 = ______
37 + 10 = ______
47 + 20 = ______
15 + 10 = ______
36 − 10 = ______
19 + 20 = ______
50 + 10 = ______
