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
78 + 20 = ______
60 + 10 = ______
67 + 20 = ______
46 + 10 = ______
15 + 10 = ______
2 × 10 = ______
25 + 20 = ______
48 + 10 = ______
59 + 10 = ______
8 × 10 = ______
27 − 10 = ______
79 − 10 = ______
50 − 10 = ______
39 + 20 = ______
89 − 10 = ______
33 − 10 = ______
6 × 10 = ______
5 × 10 = ______
62 + 10 = ______
36 + 20 = ______
