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
7 × 10 = ______
66 + 20 = ______
21 + 20 = ______
86 − 10 = ______
88 + 10 = ______
85 + 10 = ______
6 × 10 = ______
57 + 20 = ______
53 + 10 = ______
64 + 10 = ______
4 × 10 = ______
64 + 20 = ______
5 × 10 = ______
69 + 10 = ______
2 × 10 = ______
8 × 10 = ______
46 − 10 = ______
9 × 10 = ______
67 + 20 = ______
31 − 10 = ______
