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
50 + 10 = ______
39 + 10 = ______
85 − 10 = ______
28 − 10 = ______
79 + 20 = ______
91 − 10 = ______
50 − 10 = ______
72 − 10 = ______
4 × 10 = ______
2 × 10 = ______
76 + 10 = ______
15 + 10 = ______
19 + 10 = ______
72 + 10 = ______
45 + 10 = ______
59 − 10 = ______
8 × 10 = ______
7 × 10 = ______
9 × 10 = ______
54 + 20 = ______
