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
2 × 10 = ______
74 + 20 = ______
11 + 10 = ______
87 − 10 = ______
6 × 10 = ______
21 − 10 = ______
1 × 10 = ______
85 + 20 = ______
28 + 20 = ______
47 − 10 = ______
3 × 10 = ______
49 + 10 = ______
88 + 20 = ______
68 + 20 = ______
49 − 10 = ______
53 − 10 = ______
12 + 20 = ______
8 × 10 = ______
89 − 10 = ______
5 × 10 = ______
