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
2 × 10 = ______
6 × 10 = ______
49 − 10 = ______
31 − 10 = ______
38 + 10 = ______
59 + 20 = ______
1 × 10 = ______
8 × 10 = ______
45 + 10 = ______
55 + 10 = ______
80 + 10 = ______
12 + 10 = ______
9 × 10 = ______
22 − 10 = ______
73 + 20 = ______
53 + 20 = ______
79 + 10 = ______
71 + 20 = ______
24 + 10 = ______
97 − 10 = ______
