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
30 − 10 = ______
72 + 20 = ______
15 + 10 = ______
7 × 10 = ______
41 + 20 = ______
1 × 10 = ______
77 − 10 = ______
76 − 10 = ______
42 + 20 = ______
58 + 20 = ______
8 × 10 = ______
79 + 10 = ______
97 − 10 = ______
64 − 10 = ______
85 + 10 = ______
66 + 10 = ______
74 + 10 = ______
5 × 10 = ______
2 × 10 = ______
64 + 10 = ______
