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
79 + 20 = ______
51 − 10 = ______
1 × 10 = ______
87 + 10 = ______
67 + 10 = ______
62 + 10 = ______
91 − 10 = ______
9 × 10 = ______
21 + 20 = ______
56 − 10 = ______
50 − 10 = ______
13 + 20 = ______
66 + 10 = ______
61 + 10 = ______
46 + 10 = ______
32 − 10 = ______
36 − 10 = ______
19 + 20 = ______
60 − 10 = ______
80 + 10 = ______
