Question

Question 4 (k)

Write the following as decimal:

$4\frac{1}{2}$

Answer 1

$4\frac{1}{2}=\frac{2\times 4+1}{4}$
$=\frac{9}{2}$ (converting mixed fraction into improper fraction)
$=\frac{9\times 5}{2\times 5}$ (multiplying numerator and denominator by 5)
$=\frac{45}{10}=\frac{40+5}{10}$
$=\frac{4\text{/}0}{1\text{/}0}+\frac{5}{10}$ (dividing numerator and denominator by 10)
$=4+\frac{5}{10}=4+0.5=4.5$