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
66 − 10 = ______
68 + 20 = ______
54 + 20 = ______
68 − 10 = ______
3 × 10 = ______
5 × 10 = ______
46 + 20 = ______
80 − 10 = ______
22 + 20 = ______
71 + 10 = ______
50 + 10 = ______
69 − 10 = ______
69 + 10 = ______
89 − 10 = ______
8 × 10 = ______
84 − 10 = ______
77 + 10 = ______
1 × 10 = ______
4 × 10 = ______
28 − 10 = ______
