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
53 − 10 = ______
63 + 20 = ______
15 + 20 = ______
86 + 10 = ______
40 + 10 = ______
31 − 10 = ______
71 − 10 = ______
67 − 10 = ______
53 + 10 = ______
75 + 20 = ______
59 + 10 = ______
4 × 10 = ______
7 × 10 = ______
2 × 10 = ______
62 + 10 = ______
66 − 10 = ______
1 × 10 = ______
49 + 10 = ______
95 − 10 = ______
50 − 10 = ______
