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
6 × 10 = ______
71 + 10 = ______
1 × 10 = ______
31 − 10 = ______
3 × 10 = ______
49 + 20 = ______
40 − 10 = ______
33 + 10 = ______
81 + 10 = ______
4 × 10 = ______
5 × 10 = ______
18 + 10 = ______
49 − 10 = ______
85 + 10 = ______
45 + 20 = ______
88 − 10 = ______
44 − 10 = ______
52 − 10 = ______
81 − 10 = ______
68 + 20 = ______
