Question

Convert the common fractions into decimal fractions.
(1) $\frac{3}{4}$

(2) $\frac{4}{5}$

(3) $\frac{9}{8}$

(4) $\frac{17}{20}$

(5) $\frac{36}{40}$

(6) $\frac{7}{25}$

(7) $\frac{19}{200}$

Answer 1

(1) $\frac{3}{4}=\frac{3\times 25}{4\times 25}=\frac{75}{100}=0.75$

(2) $\frac{4}{5}=\frac{4\times 2}{5\times 2}=\frac{8}{10}=0.8$

(3) $\frac{9}{8}=\frac{9\times 125}{8\times 125}=\frac{1125}{1000}=1.125$

(4) $\frac{17}{20}=\frac{17\times 5}{20\times 5}=\frac{85}{100}=0.85$

(5) $\frac{36}{40}=\frac{36÷4}{40÷4}=\frac{9}{10}=0.9$

(6) $\frac{7}{25}=\frac{7\times 4}{25\times 4}=\frac{28}{100}=0.28$

(7) $\frac{19}{200}=\frac{19\times 5}{200\times 5}=\frac{95}{1000}=0.095$