Express the following as a fraction in simplest form :

0.8

We have:

0.8

There is 1 decimal place, so we remove the decimal point and divide by 10.

$\phantom{=} 0.8 = \dfrac{8}{10} \\[1em] = \dfrac{4}{5} \quad \text{[Dividing both by 2]}$

∴ The answer is $\dfrac{4}{5}$