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
85 + 20 = ______
89 − 10 = ______
81 − 10 = ______
93 − 10 = ______
63 − 10 = ______
58 − 10 = ______
66 + 10 = ______
9 × 10 = ______
7 × 10 = ______
36 − 10 = ______
48 + 20 = ______
2 × 10 = ______
25 − 10 = ______
39 + 10 = ______
4 × 10 = ______
74 + 10 = ______
47 + 20 = ______
58 + 20 = ______
57 + 10 = ______
78 + 20 = ______
