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
31 + 10 = ______
44 − 10 = ______
66 + 20 = ______
4 × 10 = ______
59 − 10 = ______
22 + 20 = ______
76 + 10 = ______
74 − 10 = ______
56 + 20 = ______
17 + 20 = ______
88 − 10 = ______
30 + 10 = ______
7 × 10 = ______
40 − 10 = ______
8 × 10 = ______
6 × 10 = ______
97 − 10 = ______
57 + 10 = ______
79 − 10 = ______
36 + 20 = ______
