There are many other prefixes, with milli (m) being the other one you're likely to need. e.g. 1,000 mm = 1 m.
The milli is a slightly confusing prefix, as when used with the metre, each m stands for something different! Other prefixes that you might meet in maths or science are listed below:
|Prefix||Multiplier||Power of ten
|giga, G||1,000,000,000 (billion)||109|
|mega, M||1,000,000 (million)||106|
|kilo, k||1,000 (thousand)||103|
|deci, d||1/10 (tenth)||10-2|
|centi, c||1/100 (hundredth)||10-2|
|milli, m||1/1,000 (thousandth)||10-3|
|micro, µ||1/1,000,000 (millionth)||10-6|
|nano, n||1/1,000,000,000 (billionth)||10-9|
Make sure you know at least the ones in red.