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
80 − 10 = ______
47 − 10 = ______
65 − 10 = ______
5 × 10 = ______
8 × 10 = ______
42 + 10 = ______
57 + 20 = ______
1 × 10 = ______
20 + 10 = ______
36 + 20 = ______
37 − 10 = ______
68 + 10 = ______
83 − 10 = ______
6 × 10 = ______
88 − 10 = ______
44 + 10 = ______
62 − 10 = ______
2 × 10 = ______
97 − 10 = ______
29 + 20 = ______
