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
30 + 20 = ______
7 × 10 = ______
27 + 20 = ______
41 + 20 = ______
43 − 10 = ______
78 − 10 = ______
1 × 10 = ______
23 + 20 = ______
33 + 20 = ______
21 + 10 = ______
49 + 20 = ______
23 − 10 = ______
2 × 10 = ______
5 × 10 = ______
9 × 10 = ______
79 − 10 = ______
71 + 10 = ______
71 + 20 = ______
6 × 10 = ______
12 + 10 = ______
