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
81 + 20 = ______
50 + 20 = ______
6 × 10 = ______
67 − 10 = ______
46 − 10 = ______
66 + 20 = ______
52 + 20 = ______
25 − 10 = ______
81 − 10 = ______
1 × 10 = ______
61 + 10 = ______
47 + 10 = ______
38 + 20 = ______
39 − 10 = ______
7 × 10 = ______
63 + 10 = ______
54 + 20 = ______
60 + 10 = ______
8 × 10 = ______
57 + 10 = ______
