Thursday

April 24, 2014

April 24, 2014

Posted by **Elizabeth** on Monday, September 17, 2007 at 3:21am.

How do I know when to multiply and when to divide when converting to metric or from?

Sample- 450km=______mi

- Science -
**bobpursley**, Monday, September 17, 2007 at 4:02amOK, good question. You know whatever units you start with will have to be divided by something across the fraction bar.

450km ( xxx/yyy) so km will be the units of yyy.

450km* 1000m/1km will work. Now I am in meters, and I need to get to miles. Hmmm. I know there is 1609m per mi, so

450km*1000m/1km * here I put m in the denominator so it divides out...

450km*1000m/km * 1mi/1609m and that does it.

- Science -
**Elizabeth**, Monday, September 17, 2007 at 8:29amThank you, I'm going to practice and see how I do.

- Science -

**Related Questions**

math - how do you calculate metric surfaces? not sure what you mean. are you ...

physics - what countries use both metric and non-metric system

history ish - The U.S is the only country currently not using the metric system ...

Science - Is there an easier way to understand how to convert gallons to liters ...

chem - What is the disadvantage of the English system? Please and thank you!!! ...

Metric System - I have two queations that have to do with the metric system: 1- ...

math - Explain what the Metric System is. Also find the year the metric system ...

math plz help - Explain what the Metric System is. Also find the year the metric...

Math/Metric system - I need to know how to make conversions and compare within ...

AP Physics - When traveling a highway in the mountains, you may see elevation ...