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
84 + 20 = ______
57 + 20 = ______
23 − 10 = ______
43 − 10 = ______
11 + 10 = ______
85 − 10 = ______
9 × 10 = ______
2 × 10 = ______
20 + 10 = ______
80 − 10 = ______
27 + 20 = ______
63 − 10 = ______
19 + 10 = ______
3 × 10 = ______
34 + 20 = ______
74 − 10 = ______
65 − 10 = ______
31 + 20 = ______
14 + 20 = ______
40 + 10 = ______
