Question

calcule as porcentagens de 5% de 200

Answer 1

Basta fazer uma regra de 3 simples

100% — 200
5% — X

organize a regra de 3

100X = 200x5
100X = 1000
X = 1000/100
X = 10

Answer 2

Olá,

$\tt \: 5\% \: \cdot \: 200 \\ \tt \: = \frac{5}{100} \cdot \: 200 \\ \tt \: = 5 \cdot \: \frac{200}{100} \\ \tt \: = 5 \cdot \: \frac{2 \cancel{00}}{1 \cancel{00}} \\ \tt \: = 5 \cdot \: 2 \\ \tt \: = 10 \: \checkmark$