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 = ______
60 + 20 = ______
41 − 10 = ______
3 × 10 = ______
50 + 10 = ______
25 + 20 = ______
63 + 10 = ______
2 × 10 = ______
1 × 10 = ______
26 + 20 = ______
39 + 10 = ______
89 − 10 = ______
16 + 20 = ______
68 + 10 = ______
65 − 10 = ______
4 × 10 = ______
34 + 20 = ______
20 + 20 = ______
27 − 10 = ______
6 × 10 = ______
