Question

1 calicule as porcentagens
a)20% de 200 b)10% de 800 c)35% de 300 d) 17% de 100 e) 30% de 90 f) 75 % de 40 g) 40% de 150 h)50% de 70 i)5% de 60 j)8% de 50 k)30% de 600 ​

Answer 1

a)20% de 200 = 40

$\frac{20}{100} \times 200 =$

$\frac{20}{100} \times \frac{200}{1} =$

$\frac{4000}{100} =$

$40$

b)10% de 800 = 80

$\frac{10}{100} \times \frac{800}{1} =$

$\frac{8000}{100} =$

$80$

c)35% de 300 = 105

$\frac{35}{100} \times \frac{300}{1} =$

$\frac{10500}{100}$

$= 105$

d) 17% de 100= 17

$\frac{17}{100} \times \frac{100}{1} =$

$\frac{1700}{100} =$

$= 17$

e) 30% de 90 = 27

$\frac{30}{100} \times \frac{90}{1} =$

$\frac{2700}{100} =$

$= 27$

f) 75 % de 40= 30

$\frac{75}{100} \times \frac{40}{1} =$

$\frac{3000}{100}$

$= 30$

g) 40% de 150= 60

$\frac{40}{100} \times \frac{150}{1} =$

$\frac{6000}{100} =$

$= 60$

h)50% de 70= 35

$\frac{50}{100} \times \frac{70}{1} =$

$\frac{3500}{100} =$

$= 35$

i)5% de 60= 3

$\frac{5}{100} \times \frac{60}{1} =$

$\frac{300}{100} =$

$= 3$

j)8% de 50= 4

$\frac{8}{100} \times \frac{50}{1} =$

$\frac{400}{100} =$

$= 4$

k)30% de 600 = 180

$\frac{30}{100} \times \frac{600}{1} =$

$\frac{18000}{100} =$

$= 180$