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
91 − 10 = ______
85 − 10 = ______
1 × 10 = ______
9 × 10 = ______
68 + 10 = ______
92 − 10 = ______
66 + 20 = ______
49 + 10 = ______
88 − 10 = ______
33 + 20 = ______
6 × 10 = ______
68 − 10 = ______
39 + 10 = ______
8 × 10 = ______
34 − 10 = ______
82 − 10 = ______
3 × 10 = ______
89 − 10 = ______
90 − 10 = ______
80 + 20 = ______
