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
42 + 20 = ______
4 × 10 = ______
93 − 10 = ______
18 + 10 = ______
45 + 10 = ______
49 + 20 = ______
37 − 10 = ______
89 − 10 = ______
20 + 20 = ______
20 + 10 = ______
36 + 10 = ______
64 + 20 = ______
68 − 10 = ______
41 + 10 = ______
40 + 10 = ______
68 + 20 = ______
84 + 10 = ______
43 + 20 = ______
65 + 10 = ______
30 + 10 = ______
