Question

d. \\(\frac{1}{10} \times 20 =\\)\\(\frac{6}{10} \times 20 =\\)\\(\frac{9}{10} \times 20 =\\)b. \\(9 \times \frac{2}{5}\\)\\(9 \times \frac{4}{5}\\)\\(9 \times \frac{5}{5}\\)

Explanation:

Step1: Resolver $\frac{1}{10} \times 20$

Multiplicar el numerador por 20: $\frac{1 \times 20}{10} = \frac{20}{10} = 2$

Step2: Resolver $\frac{6}{10} \times 20$

Multiplicar el numerador por 20: $\frac{6 \times 20}{10} = \frac{120}{10} = 12$

Step3: Resolver $\frac{9}{10} \times 20$

Multiplicar el numerador por 20: $\frac{9 \times 20}{10} = \frac{180}{10} = 18$

Step4: Resolver $9 \times \frac{2}{5}$

Multiplicar 9 por el numerador: $\frac{9 \times 2}{5} = \frac{18}{5} = 3.6$ (o $\frac{18}{5}$)

Step5: Resolver $9 \times \frac{4}{5}$

Multiplicar 9 por el numerador: $\frac{9 \times 4}{5} = \frac{36}{5} = 7.2$ (o $\frac{36}{5}$)

Step6: Resolver $9 \times \frac{5}{5}$

Simplificar $\frac{5}{5} = 1$, entonces $9 \times 1 = 9$

Answer:

$\frac{1}{10} \times 20 = 2$
$\frac{6}{10} \times 20 = 12$
$\frac{9}{10} \times 20 = 18$
$9 \times \frac{2}{5} = \frac{18}{5}$ (o $3.6$)
$9 \times \frac{4}{5} = \frac{36}{5}$ (o $7.2$)
$9 \times \frac{5}{5} = 9$