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 = ______
13 + 10 = ______
43 + 20 = ______
75 + 10 = ______
2 × 10 = ______
80 − 10 = ______
4 × 10 = ______
46 + 10 = ______
23 + 10 = ______
77 + 20 = ______
66 + 10 = ______
52 − 10 = ______
74 + 20 = ______
73 − 10 = ______
44 + 10 = ______
6 × 10 = ______
85 + 20 = ______
94 − 10 = ______
64 + 10 = ______
30 + 20 = ______
