Express the following as a fraction in simplest form :

0.0024

We have:

0.0024

There are 4 decimal places, so we remove the decimal point and divide by 10000.

$\phantom{=} 0.0024 = \dfrac{24}{10000} \\[1em] = \dfrac{3}{1250} \quad \text{[Dividing both by 8]}$

∴ The answer is $\dfrac{3}{1250}$