5. Convert litres \( (\ell) \) to millilitres (ml) \( \begin{array}{ll}\text { a. } 1 \ell=\square \mathrm{ml} & \text { b. } \frac{1}{2} \ell=\square \mathrm{ml} \\ \text { c. } \frac{1}{4} \ell=\square \mathrm{m} \ell & \text { d. } 1 \frac{1}{2} \ell=\square \mathrm{ml} \\ \text { e. } \frac{3}{4} \ell=\square \mathrm{m} \ell & \text { f. } 2 \frac{1}{2} l=\square \mathrm{ml}\end{array} \)

1 litre is equal to 1,000 millilitres, so that means you can convert litres into millilitres by simply multiplying by 1,000. Pop quiz—are you ready? When you do this for \(\frac{1}{2}\) litre, \(\frac{1}{4}\) litre, and so on, it’s like turning water into magic elixirs, bringing those volumes to life in millilitres! For instance, when converting \(\frac{1}{2} \ell\), you just do \(0.5 \times 1,000\), which equals 500 ml. Similarly, for \(\frac{1}{4} \ell\), it’s \(0.25 \times 1,000\) = 250 ml. So let's whip up the numbers: a. 1,000 ml; b. 500 ml; c. 250 ml; d. 1,500 ml; e. 750 ml; f. 2,500 ml. Voilà! You now have all your conversions, like a barista with the perfect recipe!