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 = ______
9 × 10 = ______
77 − 10 = ______
89 + 20 = ______
31 + 20 = ______
41 − 10 = ______
3 × 10 = ______
5 × 10 = ______
36 + 20 = ______
99 − 10 = ______
43 − 10 = ______
81 + 20 = ______
63 + 10 = ______
82 + 10 = ______
6 × 10 = ______
56 − 10 = ______
31 − 10 = ______
28 + 10 = ______
2 × 10 = ______
55 + 20 = ______
