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
13 + 20 = ______
39 − 10 = ______
99 − 10 = ______
58 + 10 = ______
65 − 10 = ______
50 + 10 = ______
4 × 10 = ______
55 + 20 = ______
79 − 10 = ______
5 × 10 = ______
70 + 20 = ______
88 + 10 = ______
18 + 10 = ______
8 × 10 = ______
51 − 10 = ______
3 × 10 = ______
24 − 10 = ______
38 + 10 = ______
67 + 10 = ______
48 + 10 = ______
