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
91 − 10 = ______
77 − 10 = ______
45 + 10 = ______
60 + 10 = ______
63 + 20 = ______
27 + 20 = ______
78 − 10 = ______
17 + 10 = ______
88 + 20 = ______
2 × 10 = ______
77 + 10 = ______
62 + 10 = ______
67 − 10 = ______
8 × 10 = ______
73 − 10 = ______
21 − 10 = ______
35 + 10 = ______
65 + 20 = ______
58 − 10 = ______
53 + 20 = ______
