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
65 − 10 = ______
91 − 10 = ______
47 + 10 = ______
23 − 10 = ______
39 + 10 = ______
7 × 10 = ______
24 − 10 = ______
71 + 10 = ______
89 − 10 = ______
3 × 10 = ______
1 × 10 = ______
17 + 20 = ______
54 + 20 = ______
53 + 20 = ______
93 − 10 = ______
80 + 20 = ______
69 + 20 = ______
62 − 10 = ______
55 + 20 = ______
78 + 20 = ______
