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
9 × 10 = ______
45 + 10 = ______
88 + 10 = ______
1 × 10 = ______
8 × 10 = ______
91 − 10 = ______
4 × 10 = ______
63 − 10 = ______
77 + 20 = ______
57 + 20 = ______
59 − 10 = ______
53 + 10 = ______
2 × 10 = ______
81 + 10 = ______
25 − 10 = ______
89 − 10 = ______
75 − 10 = ______
45 + 20 = ______
20 + 10 = ______
5 × 10 = ______
