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 + 20 = ______
39 − 10 = ______
74 − 10 = ______
14 + 10 = ______
64 + 20 = ______
71 − 10 = ______
8 × 10 = ______
84 + 10 = ______
6 × 10 = ______
76 + 10 = ______
89 + 10 = ______
12 + 20 = ______
2 × 10 = ______
74 + 20 = ______
11 + 10 = ______
94 − 10 = ______
76 − 10 = ______
47 + 10 = ______
80 + 10 = ______
97 − 10 = ______
