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
82 + 20 = ______
57 + 20 = ______
2 × 10 = ______
17 + 20 = ______
69 + 10 = ______
16 + 20 = ______
66 − 10 = ______
66 + 20 = ______
67 − 10 = ______
33 − 10 = ______
30 + 20 = ______
9 × 10 = ______
87 − 10 = ______
21 + 20 = ______
41 + 10 = ______
81 − 10 = ______
56 + 20 = ______
26 − 10 = ______
1 × 10 = ______
39 − 10 = ______
