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 + 20 = ______
84 − 10 = ______
80 + 10 = ______
64 + 20 = ______
70 + 10 = ______
27 − 10 = ______
42 + 10 = ______
56 + 20 = ______
72 − 10 = ______
34 − 10 = ______
39 − 10 = ______
6 × 10 = ______
53 + 10 = ______
2 × 10 = ______
51 − 10 = ______
64 − 10 = ______
81 + 10 = ______
7 × 10 = ______
9 × 10 = ______
73 − 10 = ______
