Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
42 − 10 = ______
72 − 10 = ______
85 + 20 = ______
46 + 10 = ______
8 × 10 = ______
13 + 10 = ______
6 × 10 = ______
69 − 10 = ______
55 + 20 = ______
22 + 20 = ______
7 × 10 = ______
78 − 10 = ______
65 + 20 = ______
22 − 10 = ______
91 − 10 = ______
80 + 10 = ______
70 − 10 = ______
21 + 20 = ______
32 + 10 = ______
28 + 20 = ______
