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
3 × 10 = ______
74 + 20 = ______
38 + 20 = ______
13 + 20 = ______
21 + 10 = ______
65 + 10 = ______
8 × 10 = ______
73 − 10 = ______
53 + 20 = ______
22 + 10 = ______
49 − 10 = ______
2 × 10 = ______
71 + 10 = ______
74 + 10 = ______
54 − 10 = ______
4 × 10 = ______
36 − 10 = ______
47 + 10 = ______
1 × 10 = ______
55 − 10 = ______
