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
99 − 10 = ______
28 + 20 = ______
97 − 10 = ______
86 + 10 = ______
66 + 20 = ______
45 − 10 = ______
76 + 10 = ______
5 × 10 = ______
83 − 10 = ______
1 × 10 = ______
40 + 10 = ______
34 + 20 = ______
90 − 10 = ______
35 + 20 = ______
37 − 10 = ______
6 × 10 = ______
39 + 10 = ______
75 + 20 = ______
36 + 20 = ______
88 − 10 = ______
