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 = ______
9 × 10 = ______
8 × 10 = ______
30 − 10 = ______
82 + 20 = ______
60 − 10 = ______
3 × 10 = ______
78 + 20 = ______
45 + 10 = ______
17 + 20 = ______
5 × 10 = ______
1 × 10 = ______
66 + 20 = ______
87 − 10 = ______
92 − 10 = ______
86 + 20 = ______
61 + 10 = ______
22 − 10 = ______
89 − 10 = ______
72 + 20 = ______
