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 = ______
65 − 10 = ______
49 − 10 = ______
46 − 10 = ______
91 − 10 = ______
1 × 10 = ______
34 + 20 = ______
22 − 10 = ______
17 + 20 = ______
66 + 10 = ______
52 − 10 = ______
38 − 10 = ______
75 + 20 = ______
27 + 10 = ______
27 − 10 = ______
6 × 10 = ______
35 + 10 = ______
3 × 10 = ______
71 + 20 = ______
52 + 10 = ______
