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
33 − 10 = ______
40 + 10 = ______
54 − 10 = ______
85 + 20 = ______
38 + 10 = ______
8 × 10 = ______
27 + 20 = ______
27 − 10 = ______
47 + 20 = ______
77 + 20 = ______
3 × 10 = ______
66 − 10 = ______
83 + 10 = ______
31 + 10 = ______
78 − 10 = ______
84 + 20 = ______
79 − 10 = ______
57 + 10 = ______
25 + 20 = ______
6 × 10 = ______
