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
6 × 10 = ______
71 − 10 = ______
2 × 10 = ______
42 − 10 = ______
23 − 10 = ______
32 + 20 = ______
33 + 10 = ______
12 + 20 = ______
97 − 10 = ______
70 − 10 = ______
1 × 10 = ______
3 × 10 = ______
41 + 20 = ______
15 + 10 = ______
29 + 10 = ______
74 + 20 = ______
40 + 10 = ______
11 + 10 = ______
5 × 10 = ______
50 + 10 = ______
