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
91 − 10 = ______
58 − 10 = ______
21 + 10 = ______
79 + 20 = ______
37 + 20 = ______
71 + 20 = ______
99 − 10 = ______
67 + 10 = ______
46 − 10 = ______
30 − 10 = ______
69 − 10 = ______
3 × 10 = ______
7 × 10 = ______
25 + 20 = ______
87 + 20 = ______
77 + 10 = ______
4 × 10 = ______
55 + 20 = ______
57 + 20 = ______
29 + 10 = ______
