Question

Explain, using an example, why you need to multiply when converting from a larger unit to a smaller unit

Answer 1

This is often called scaling in math, used in ratios, fraction, percent's etc.

Explanation:

Answer 2

You can use similar processes when converting from smaller to larger units. When converting a larger unit to a smaller one, you multiply; when you convert a smaller unit to a larger one, you divide. Here is an example..