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## MAP Recommended Practice

### Course: MAP Recommended Practice>Unit 26

Lesson 6: Converting metric units

# Converting units: metric distance

Learn all about converting different metric units to a common unit, in this case, meters. Understand the prefixes like deca, hecto, kilo, milli, and centi, and how they relate to the base unit, meter. This helps us compare and order different measurements. Created by Sal Khan.

## Want to join the conversation?

• Isnt Milli Million?
• They are all wrong, milli means thousand. Like how a millimeter is 1/1000 of a liter. Sorry to say you wrong, but it’s true
• Has anyone actually heard "decameter" other than in a school discussion of metric units? My web browser's spell-checker doesn't even like the word "decameter."
• Perhaps it would work if you spell it as "dekameter". It is not much used because people tend to confure it was decimeter (which is used much more). In general we just talk about meters or kilometers. In case of areas (farmers in my country for example) talk about hectometers, but never dekameters. It is just a standard SI unit, you must learn it at school :)...
• what does metric mean in the title
• The word “metric” means measurement and describes a system of units based on powers of 10. The metric system uses prefixes on units to represent powers of 10. For example:

micro means 1/1,000,000;
milli means 1/1,000;
centi means 1/100;
deci means 1/10;
deka means 10;
hecto means 100;
kilo means 1,000; and
mega means 1,000,000.

So, for example, a milligram is 1/1,000 of a gram, and a hectometer is 100 meters.
• Is there a measurements that are more than kilo?
• Yes a tonne which is more than a kilo, its equivalent to 1000 kilograms.
• ​Is there anything smaller than milli?
• Yes! Some smaller prefixes include: Micro (0.000,001), nano (0.000,000,001), and pico (0.000,000,000,001). Commas are in the decimal to show every three didgets - like in non-decimals.
• Is there a type of meter that compares to 1,000,000?
• Yes, there are different types of meters that can be compared to 1,000,000. For example, 1 million meters is equal to 1,000 kilometers1. Another example is that a square kilometer is one-million square meters2. I hope this helps!
• whats a decameter
• A decameter is ten meters.

Similar to how a DECade is ten years.

It's all in the prefix of the word.
Dec = 10
Mil = 1000 - like millenium or 1000 years