Question

9 grams is how many milligrams?

Answer 1

`9000mg`

Explanation:

`1` milligram `= 1/1000` grams

the prefix 'milli-' means `1/1000` of a quantity.

`1` gram `= 1000` milligrams

`9` grams `= 9 * 1000` milligrams

`= 9000` milligrams