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
45 + 10 = ______
64 + 20 = ______
65 − 10 = ______
2 × 10 = ______
37 + 20 = ______
8 × 10 = ______
5 × 10 = ______
57 − 10 = ______
90 − 10 = ______
4 × 10 = ______
28 + 10 = ______
42 + 10 = ______
51 − 10 = ______
3 × 10 = ______
11 + 20 = ______
35 − 10 = ______
1 × 10 = ______
66 − 10 = ______
31 + 10 = ______
47 + 20 = ______
