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
35 + 20 = ______
62 + 20 = ______
65 − 10 = ______
17 + 20 = ______
36 − 10 = ______
25 + 20 = ______
3 × 10 = ______
63 + 20 = ______
1 × 10 = ______
56 − 10 = ______
7 × 10 = ______
84 − 10 = ______
72 − 10 = ______
58 + 20 = ______
78 + 20 = ______
45 + 20 = ______
85 − 10 = ______
60 − 10 = ______
29 + 10 = ______
43 − 10 = ______
