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
69 + 20 = ______
27 − 10 = ______
55 + 10 = ______
37 − 10 = ______
78 + 20 = ______
5 × 10 = ______
48 − 10 = ______
1 × 10 = ______
35 + 20 = ______
48 + 20 = ______
43 + 20 = ______
73 − 10 = ______
21 + 10 = ______
77 − 10 = ______
2 × 10 = ______
39 + 20 = ______
65 − 10 = ______
56 + 10 = ______
77 + 10 = ______
24 + 20 = ______
