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
19 + 10 = ______
8 × 10 = ______
45 + 10 = ______
73 − 10 = ______
2 × 10 = ______
33 − 10 = ______
6 × 10 = ______
18 + 10 = ______
25 + 20 = ______
78 − 10 = ______
4 × 10 = ______
70 + 10 = ______
20 + 20 = ______
11 + 20 = ______
52 + 10 = ______
58 + 20 = ______
31 + 10 = ______
57 + 20 = ______
81 + 10 = ______
69 − 10 = ______
