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
9 × 10 = ______
6 × 10 = ______
17 + 10 = ______
3 × 10 = ______
43 − 10 = ______
41 + 10 = ______
85 − 10 = ______
21 − 10 = ______
68 − 10 = ______
5 × 10 = ______
78 + 10 = ______
58 + 10 = ______
45 − 10 = ______
25 + 10 = ______
25 − 10 = ______
73 + 20 = ______
29 − 10 = ______
50 + 10 = ______
63 + 20 = ______
2 × 10 = ______
