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
99 − 10 = ______
80 + 20 = ______
64 + 20 = ______
71 − 10 = ______
83 − 10 = ______
88 + 20 = ______
16 + 20 = ______
70 + 20 = ______
79 + 20 = ______
3 × 10 = ______
77 + 10 = ______
45 + 20 = ______
19 + 20 = ______
1 × 10 = ______
47 + 10 = ______
21 − 10 = ______
77 + 20 = ______
40 + 10 = ______
24 + 10 = ______
19 + 10 = ______
