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 = ______
82 − 10 = ______
42 − 10 = ______
4 × 10 = ______
60 − 10 = ______
69 + 20 = ______
30 + 20 = ______
3 × 10 = ______
65 + 10 = ______
80 − 10 = ______
84 + 10 = ______
37 + 20 = ______
47 + 10 = ______
50 + 10 = ______
2 × 10 = ______
27 + 20 = ______
66 + 10 = ______
40 + 20 = ______
40 − 10 = ______
59 + 20 = ______
