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
74 + 10 = ______
67 − 10 = ______
53 − 10 = ______
77 − 10 = ______
71 − 10 = ______
6 × 10 = ______
3 × 10 = ______
5 × 10 = ______
45 + 10 = ______
89 + 10 = ______
39 + 10 = ______
57 − 10 = ______
86 + 20 = ______
75 − 10 = ______
37 + 10 = ______
13 + 20 = ______
40 − 10 = ______
84 + 20 = ______
78 − 10 = ______
57 + 10 = ______
