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
34 + 20 = ______
87 − 10 = ______
1 × 10 = ______
9 × 10 = ______
52 + 20 = ______
21 − 10 = ______
60 + 20 = ______
57 + 10 = ______
72 − 10 = ______
15 + 10 = ______
69 + 10 = ______
63 + 20 = ______
16 + 10 = ______
27 + 10 = ______
8 × 10 = ______
89 + 10 = ______
3 × 10 = ______
38 + 20 = ______
7 × 10 = ______
6 × 10 = ______
