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 = ______
27 + 20 = ______
73 + 20 = ______
92 − 10 = ______
46 + 10 = ______
86 + 20 = ______
81 + 20 = ______
9 × 10 = ______
8 × 10 = ______
23 + 20 = ______
12 + 20 = ______
86 − 10 = ______
3 × 10 = ______
4 × 10 = ______
70 − 10 = ______
89 − 10 = ______
62 + 10 = ______
88 − 10 = ______
54 + 20 = ______
90 − 10 = ______
