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 = ______
69 + 10 = ______
84 − 10 = ______
18 + 10 = ______
4 × 10 = ______
46 − 10 = ______
89 + 10 = ______
21 + 20 = ______
72 − 10 = ______
8 × 10 = ______
9 × 10 = ______
74 − 10 = ______
34 + 10 = ______
25 + 20 = ______
87 + 20 = ______
6 × 10 = ______
57 − 10 = ______
13 + 10 = ______
36 + 20 = ______
3 × 10 = ______
