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
9 × 10 = ______
82 + 10 = ______
32 + 20 = ______
63 + 20 = ______
66 + 10 = ______
1 × 10 = ______
70 − 10 = ______
24 − 10 = ______
55 + 10 = ______
77 + 20 = ______
2 × 10 = ______
79 + 10 = ______
77 − 10 = ______
68 + 10 = ______
39 − 10 = ______
13 + 10 = ______
65 + 20 = ______
76 − 10 = ______
3 × 10 = ______
21 − 10 = ______
