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
8 × 10 = ______
5 × 10 = ______
78 + 10 = ______
88 + 10 = ______
23 + 20 = ______
65 − 10 = ______
14 + 20 = ______
21 + 10 = ______
35 + 20 = ______
92 − 10 = ______
49 − 10 = ______
4 × 10 = ______
50 + 20 = ______
44 + 20 = ______
46 + 10 = ______
65 + 20 = ______
83 + 20 = ______
9 × 10 = ______
50 + 10 = ______
71 + 20 = ______
