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
65 − 10 = ______
77 + 20 = ______
36 + 20 = ______
57 − 10 = ______
14 + 10 = ______
2 × 10 = ______
5 × 10 = ______
19 + 20 = ______
6 × 10 = ______
99 − 10 = ______
60 + 20 = ______
4 × 10 = ______
66 + 10 = ______
15 + 10 = ______
37 + 20 = ______
24 + 20 = ______
82 + 20 = ______
81 − 10 = ______
60 − 10 = ______
85 + 10 = ______
