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
53 − 10 = ______
69 − 10 = ______
17 + 20 = ______
31 + 20 = ______
99 − 10 = ______
82 + 20 = ______
8 × 10 = ______
27 + 20 = ______
87 + 10 = ______
64 + 20 = ______
9 × 10 = ______
64 + 10 = ______
1 × 10 = ______
5 × 10 = ______
57 + 10 = ______
2 × 10 = ______
81 + 10 = ______
88 + 20 = ______
59 − 10 = ______
69 + 10 = ______
