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 = ______
31 + 10 = ______
1 × 10 = ______
33 + 20 = ______
65 − 10 = ______
75 + 20 = ______
4 × 10 = ______
6 × 10 = ______
89 + 20 = ______
72 + 10 = ______
84 − 10 = ______
12 + 10 = ______
79 + 10 = ______
84 + 20 = ______
9 × 10 = ______
30 + 10 = ______
47 + 10 = ______
44 + 10 = ______
83 + 10 = ______
82 − 10 = ______
