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
34 + 10 = ______
25 − 10 = ______
52 − 10 = ______
66 − 10 = ______
58 + 10 = ______
9 × 10 = ______
32 + 20 = ______
89 + 10 = ______
81 − 10 = ______
5 × 10 = ______
64 − 10 = ______
68 + 20 = ______
63 + 20 = ______
70 − 10 = ______
68 + 10 = ______
39 + 20 = ______
53 − 10 = ______
55 + 20 = ______
85 + 20 = ______
88 + 20 = ______
