Question

Transforme as frações em porcentagens.
a. 1\4=

b. 3\4=

c. 7\10=

d. 4\25=

e. 18\200=

f. 16\400=

Answer 1

a. 25%

b. 75%

c. 70%

d. 16%

e. 9%

f. 4%

Answer 2

Explicação passo-a-passo:

a) $\sf \dfrac{1}{4}=\dfrac{1\cdot25}{4\cdot25}=\dfrac{25}{100}=\red{25\%}$

b) $\sf \dfrac{3}{4}=\dfrac{3\cdot25}{4\cdot25}=\dfrac{75}{100}=\red{75\%}$

c) $\sf \dfrac{7}{10}=\dfrac{7\cdot10}{10\cdot10}=\dfrac{70}{100}=\red{70\%}$

d) $\sf \dfrac{4}{25}=\dfrac{4\cdot4}{25\cdot4}=\dfrac{16}{100}=\red{16\%}$

e) $\sf \dfrac{18}{200}=\dfrac{18\div2}{200\div2}=\dfrac{9}{100}=\red{9\%}$

f) $\sf \dfrac{16}{400}=\dfrac{16\div4}{400\div4}=\dfrac{4}{100}=\red{4\%}$