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
76 + 20 = ______
65 − 10 = ______
18 + 20 = ______
73 − 10 = ______
66 + 20 = ______
71 + 10 = ______
17 + 10 = ______
34 + 20 = ______
18 + 10 = ______
56 − 10 = ______
71 − 10 = ______
1 × 10 = ______
91 − 10 = ______
20 + 20 = ______
58 + 10 = ______
9 × 10 = ______
5 × 10 = ______
82 + 10 = ______
2 × 10 = ______
54 − 10 = ______
