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
7 × 10 = ______
91 − 10 = ______
70 + 10 = ______
31 + 20 = ______
64 − 10 = ______
34 + 20 = ______
27 − 10 = ______
6 × 10 = ______
44 + 10 = ______
9 × 10 = ______
77 − 10 = ______
23 + 20 = ______
53 − 10 = ______
2 × 10 = ______
32 + 20 = ______
18 + 10 = ______
60 + 10 = ______
81 + 10 = ______
98 − 10 = ______
71 − 10 = ______
