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 = ______
45 + 20 = ______
66 + 10 = ______
39 + 20 = ______
67 + 10 = ______
6 × 10 = ______
48 − 10 = ______
56 + 10 = ______
80 + 20 = ______
38 − 10 = ______
36 − 10 = ______
77 + 20 = ______
1 × 10 = ______
2 × 10 = ______
20 + 20 = ______
63 + 10 = ______
25 + 10 = ______
21 − 10 = ______
85 + 10 = ______
29 − 10 = ______
