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
66 + 20 = ______
4 × 10 = ______
18 + 20 = ______
82 + 10 = ______
5 × 10 = ______
39 + 10 = ______
48 − 10 = ______
84 + 10 = ______
47 − 10 = ______
1 × 10 = ______
34 + 20 = ______
38 − 10 = ______
87 + 20 = ______
33 − 10 = ______
3 × 10 = ______
44 − 10 = ______
53 + 10 = ______
45 + 10 = ______
89 − 10 = ______
70 + 10 = ______
