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
72 + 20 = ______
18 + 20 = ______
78 + 10 = ______
78 − 10 = ______
9 × 10 = ______
81 + 20 = ______
62 + 10 = ______
80 − 10 = ______
74 + 20 = ______
79 + 10 = ______
5 × 10 = ______
39 + 20 = ______
32 − 10 = ______
50 + 10 = ______
63 + 20 = ______
4 × 10 = ______
70 − 10 = ______
86 + 20 = ______
53 + 20 = ______
70 + 10 = ______
