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 = ______
68 − 10 = ______
78 + 20 = ______
42 + 20 = ______
76 + 20 = ______
5 × 10 = ______
42 − 10 = ______
65 + 10 = ______
71 − 10 = ______
1 × 10 = ______
72 − 10 = ______
46 + 10 = ______
74 + 10 = ______
12 + 20 = ______
13 + 10 = ______
81 + 20 = ______
62 − 10 = ______
37 − 10 = ______
2 × 10 = ______
27 + 20 = ______
