Write each of the following as percent:

Solution:

(i) $\frac{7}{25}=\frac{7}{25} \times 100$

$=\frac{700}{25}=28 \%$

(ii) $\frac{14}{625}=\frac{14}{25 \times 25} \times 100$

$=\frac{1400}{625}$

$=2.24 \%$

(iii) $\frac{5}{8}=0.625 \times 100$

$=62.5 \%$

(iv) $0.8=\frac{8}{10} \times 100$

$=80 \%$

(v) $0.005=0.005 \times 100$

$=0.5 \%$

(vi) $3: 25=\frac{3}{25} \times 100$

$=\frac{300}{25}$

$=12 \%$

(vii) $11: 80=\frac{11}{80} \times 100$

$=\frac{1100}{80}$

$=13.75 \%$

(viii) $111: 125=\frac{111}{125}$

$=0.888 \times 100$

$=88.8 \%$

(ix) $13: 75=\frac{13}{75}$

$=0.1733 \times 100$

$=17.33 \%$

(x) $15: 16=\frac{15}{16}$

$=0.9375 \times 100$

$=93.75 \%$

(xi) $0.18=\frac{18}{100}$

$=\frac{18}{100} \times 100$

$=18 \%$

(xii) $\frac{7}{125}=0.056$

$=0.056 \times 100$

$=5.6 \%$