Question

Question 4 (f)

Write the following as decimal:

$4\frac{2}{10}$

Answer 1

$4\frac{2}{10}$
$=\frac{10\times 4+2}{10}$
$=\frac{42}{10}$ (converting mixed fraction into improper fraction)
$=\frac{40+2}{10}$
$=\frac{4\text{/}0}{1\text{/}0}+\frac{2}{10}$ (dividing numerator and denominator by 10)
$=4+0.2=4.2$