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
2 × 10 = ______
65 + 20 = ______
7 × 10 = ______
71 − 10 = ______
36 + 20 = ______
4 × 10 = ______
21 − 10 = ______
17 + 10 = ______
46 + 10 = ______
39 + 10 = ______
78 + 10 = ______
61 − 10 = ______
3 × 10 = ______
80 + 10 = ______
61 + 20 = ______
45 + 20 = ______
82 − 10 = ______
16 + 20 = ______
59 + 20 = ______
60 − 10 = ______
