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
4 × 10 = ______
42 + 10 = ______
9 × 10 = ______
49 − 10 = ______
6 × 10 = ______
57 + 10 = ______
48 + 10 = ______
47 + 20 = ______
46 − 10 = ______
67 + 20 = ______
65 + 10 = ______
97 − 10 = ______
60 + 10 = ______
2 × 10 = ______
13 + 20 = ______
1 × 10 = ______
7 × 10 = ______
49 + 20 = ______
31 − 10 = ______
25 − 10 = ______
