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
18 + 20 = ______
3 × 10 = ______
29 − 10 = ______
21 − 10 = ______
22 + 10 = ______
8 × 10 = ______
23 + 20 = ______
83 + 20 = ______
85 + 20 = ______
20 + 20 = ______
23 + 10 = ______
56 + 20 = ______
39 − 10 = ______
30 + 20 = ______
80 − 10 = ______
2 × 10 = ______
42 − 10 = ______
86 + 20 = ______
15 + 10 = ______
68 − 10 = ______
