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
36 − 10 = ______
5 × 10 = ______
30 − 10 = ______
67 + 10 = ______
78 − 10 = ______
81 + 20 = ______
23 − 10 = ______
52 − 10 = ______
15 + 20 = ______
4 × 10 = ______
3 × 10 = ______
73 − 10 = ______
47 + 20 = ______
73 + 20 = ______
9 × 10 = ______
34 + 10 = ______
7 × 10 = ______
30 + 10 = ______
1 × 10 = ______
64 + 20 = ______
