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
42 + 20 = ______
67 + 20 = ______
15 + 20 = ______
57 + 10 = ______
27 − 10 = ______
8 × 10 = ______
44 + 10 = ______
4 × 10 = ______
80 + 20 = ______
2 × 10 = ______
59 + 20 = ______
84 + 20 = ______
51 + 10 = ______
34 − 10 = ______
1 × 10 = ______
33 − 10 = ______
50 + 10 = ______
81 + 10 = ______
53 − 10 = ______
30 − 10 = ______
