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
67 + 10 = ______
45 + 20 = ______
5 × 10 = ______
11 + 10 = ______
80 + 20 = ______
78 + 20 = ______
64 + 10 = ______
83 + 20 = ______
55 − 10 = ______
3 × 10 = ______
69 − 10 = ______
42 − 10 = ______
47 + 10 = ______
87 + 20 = ______
41 + 10 = ______
88 − 10 = ______
74 + 10 = ______
33 − 10 = ______
27 + 20 = ______
49 − 10 = ______
