Question

Write each of the following as decimals:

(i) $12\frac{1}{4}$
(ii) $7\frac{1}{8}$
(iii) $5\frac{1}{20}$

Answer 1

(i) $12\frac{1}{4}=12+\frac{1}{4}$
= $12+\frac{25}{4\times 25}=12+\frac{25}{100}=12.25$

(ii) $7\frac{1}{8}=7+\frac{1}{8}$

$7+\frac{1\times 125}{8\times 125}=7+\frac{125}{1000}=7.125$

(iii) $5\frac{1}{20}=5+\frac{1}{20}$
$=5+\frac{1\times 5}{20\times 5}=5+\frac{5}{100}=5.05$