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
46 + 10 = ______
34 + 20 = ______
11 + 10 = ______
31 − 10 = ______
9 × 10 = ______
98 − 10 = ______
20 + 10 = ______
15 + 20 = ______
47 − 10 = ______
80 + 20 = ______
19 + 20 = ______
1 × 10 = ______
20 + 20 = ______
55 + 10 = ______
2 × 10 = ______
30 + 20 = ______
79 + 20 = ______
77 + 10 = ______
71 − 10 = ______
46 − 10 = ______
