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 = ______
24 − 10 = ______
20 + 10 = ______
6 × 10 = ______
67 + 10 = ______
83 − 10 = ______
3 × 10 = ______
32 − 10 = ______
65 + 20 = ______
15 + 20 = ______
8 × 10 = ______
77 − 10 = ______
9 × 10 = ______
4 × 10 = ______
39 + 20 = ______
35 + 20 = ______
46 − 10 = ______
52 − 10 = ______
30 + 10 = ______
47 + 20 = ______
