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- Topic Cluster: Pure Mathematics
- Topic: Scientific Notation and Orders of Magnitude
- Objective: Solve the most common conversion problems in a few seconds: grams and kilograms, meters and centimeters, seconds and milliseconds.
- Content:
- Level: 2

Some metric conversions come up again and again in physics. So often that it is a good idea to be able to do them fast, very fast, automatically If you can do them expending no mental effort at all, then you can use all of the mental ability you do have towards solving harder problems.

You should be able to convert very quickly between these unit:

- Meters and centimeters
- Meters and kilometers
- Grams and kilograms
- Seconds and milliseconds

All of these conversion involve simply moving the decimal point right or left a certain number of spaces. As with converting from scientific notation, if extra spaces are created when moving the decimal point, add extra zeroes on those spaces. Make sure you know how to do these.

Complete all of these until you can do them

- Convert 173 milliseconds to seconds.
- Convert 43 centimeters to meters.
- Convert 0.547 seconds to milliseconds.
- Convert 763 milliseconds to seconds.
- Convert 0.192 seconds to milliseconds.
- Convert 642 milliseconds to seconds.
- Convert 81 centimeters to meters.
- Convert 0.522 kilograms to grams.
- Convert 943 grams to kilograms.
- Convert 0.61 meters to centimeters.
- Convert 0.242 kilograms to grams.
- Convert 5 centimeters to meters.
- Convert 23 grams to kilograms
- Convert 11 milliseconds to seconds.
- Convert 0.79 kilograms to grams
- Convert 0.4 meters to centimeters
- Convert 0.3 seconds to milliseconds
- Convert 5 milliseoncds to seconds.
- Convert 845 centimeters to meters.
- Convert 5454 grams to kilograms.
- Convert 6 seconds to milliseconds.
- Convert 6.879 meters to centimeters.

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