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
51 + 10 = ______
61 + 20 = ______
88 + 20 = ______
79 + 20 = ______
37 + 20 = ______
99 − 10 = ______
88 − 10 = ______
68 + 20 = ______
28 − 10 = ______
80 + 10 = ______
4 × 10 = ______
60 + 20 = ______
26 + 10 = ______
8 × 10 = ______
49 + 10 = ______
17 + 20 = ______
56 + 10 = ______
21 + 20 = ______
23 + 10 = ______
35 + 20 = ______
