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
40 + 10 = ______
43 − 10 = ______
76 + 10 = ______
47 − 10 = ______
49 + 10 = ______
33 + 10 = ______
59 − 10 = ______
56 + 20 = ______
24 − 10 = ______
8 × 10 = ______
31 + 20 = ______
89 + 10 = ______
71 + 10 = ______
78 + 10 = ______
2 × 10 = ______
60 − 10 = ______
21 − 10 = ______
41 + 20 = ______
50 + 10 = ______
80 + 10 = ______
