What fraction has numerator 8 and is equivalent to $\dfrac{1}{2}$?

The correct answer is $\dfrac{8}{16}$

The numerator is the number on the top of the fraction.

It is currently 1, so we need to multiply it by 8.
But we must also multiply the denominator (the bottom number) by 8 at the same time.

∴ $\dfrac{1}{2}$ = $\dfrac{1 \times 8 }{2 \times 8}$ = $\dfrac{8}{16}$