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
73 + 20 = ______
77 + 20 = ______
23 + 10 = ______
6 × 10 = ______
4 × 10 = ______
63 + 20 = ______
89 + 10 = ______
85 − 10 = ______
23 − 10 = ______
59 + 20 = ______
89 + 20 = ______
53 − 10 = ______
8 × 10 = ______
92 − 10 = ______
77 − 10 = ______
45 + 20 = ______
82 + 10 = ______
73 − 10 = ______
68 − 10 = ______
31 − 10 = ______
