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
4 × 10 = ______
6 × 10 = ______
88 + 20 = ______
22 − 10 = ______
66 + 10 = ______
78 − 10 = ______
5 × 10 = ______
7 × 10 = ______
15 + 20 = ______
78 + 20 = ______
33 + 20 = ______
3 × 10 = ______
25 + 10 = ______
66 − 10 = ______
8 × 10 = ______
43 + 20 = ______
31 − 10 = ______
67 + 10 = ______
66 + 20 = ______
69 + 20 = ______
