Question

¿Cuanto es ?
0.40 de 50=
0.6 de 40=
0.32 de 120=
0.45 de 130=
1.3 de 48=
0.7 de 110=
​

Answer 1

$0.40 \times 50 = \frac{40}{100} \times 50 = 4 \times 5 = 20$

$0.6 \times 40 = \frac{6}{10} \times 40 = 6 \times 4 = 24$

$1.3 \times 48 = \frac{13}{10} \times 48 = 62.4$

$0.7 \times 110 = \frac{7}{10} \times 110 = 7 \times 11 = 77$

$0.32 \times 120 = \frac{32}{100} \times 120 = \frac{32}{10} \times 12 = 38.4$

$0.45 \times 130 = \frac{45}{100} \times 130 = \frac{45}{10} \times 13 = 58.5$