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
65 + 10 = ______
1 × 10 = ______
72 + 20 = ______
46 + 20 = ______
25 − 10 = ______
47 − 10 = ______
6 × 10 = ______
50 + 10 = ______
78 + 20 = ______
8 × 10 = ______
3 × 10 = ______
21 − 10 = ______
69 − 10 = ______
37 + 20 = ______
42 + 20 = ______
33 − 10 = ______
52 + 20 = ______
64 − 10 = ______
4 × 10 = ______
26 + 20 = ______
