Fractions are shown by having one number on top of another, for example: You would pronounce this fraction as either 'one quarter' or 'one over four' or 'one out of four.' The top number is called ...

For example, a cupcake recipe may make enough for [24] cupcakes. A home baker may want to change that number of cupcakes to [12]. They would need to work out the fraction of each ingredient to ...

but it was decided to use a half-fraction design, which requires 16 runs.