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
74 + 20 = ______
3 × 10 = ______
2 × 10 = ______
79 + 20 = ______
28 + 10 = ______
34 + 10 = ______
18 + 10 = ______
9 × 10 = ______
54 + 10 = ______
58 + 20 = ______
71 − 10 = ______
82 + 20 = ______
90 − 10 = ______
33 + 20 = ______
51 + 10 = ______
37 − 10 = ______
28 − 10 = ______
69 + 20 = ______
41 + 10 = ______
20 + 20 = ______
