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
39 + 20 = ______
75 − 10 = ______
3 × 10 = ______
84 + 10 = ______
41 + 20 = ______
27 + 10 = ______
9 × 10 = ______
63 − 10 = ______
49 + 20 = ______
7 × 10 = ______
31 + 10 = ______
4 × 10 = ______
21 − 10 = ______
90 − 10 = ______
11 + 20 = ______
31 + 20 = ______
14 + 20 = ______
36 + 20 = ______
47 + 10 = ______
56 + 10 = ______
