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
24 + 10 = ______
39 + 10 = ______
77 + 20 = ______
14 + 10 = ______
90 − 10 = ______
8 × 10 = ______
4 × 10 = ______
53 + 10 = ______
45 − 10 = ______
55 + 10 = ______
15 + 20 = ______
67 − 10 = ______
77 − 10 = ______
2 × 10 = ______
14 + 20 = ______
1 × 10 = ______
88 − 10 = ______
21 + 10 = ______
3 × 10 = ______
60 − 10 = ______
