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
78 − 10 = ______
3 × 10 = ______
74 − 10 = ______
63 + 10 = ______
80 − 10 = ______
8 × 10 = ______
55 + 10 = ______
4 × 10 = ______
85 + 20 = ______
34 + 10 = ______
5 × 10 = ______
30 − 10 = ______
15 + 20 = ______
99 − 10 = ______
82 + 20 = ______
9 × 10 = ______
62 + 20 = ______
73 − 10 = ______
7 × 10 = ______
89 + 20 = ______
