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Answer:
Choosing Appropriate Tools and Units for Metric Measurement
The metric system is the system of measurement primarily used in science and in countries outside of the United States. The metric system includes units of length (meters), mass (grams), and capacity (liters).
When you want to measure something, the first thing you need to decide is what unit of measurement you want to use. You want to use the unit that most closely matches the object you are measuring. You wouldn't want to measure the volume of a swimming pool in milliliters - the number would be too big!
Explanation:
Here are some real world measurement benchmarks to help you to decide the best unit of measurement.
Length:
A grain of sand is about 1 millimeter long
A paperclip is about 1 centimeter wide
A table could be about 1 meter tall
A road could be about 1 kilometer long
Mass:
A speck of dust could weigh about 1 milligram
A paperclip weighs about 1 gram
A kitten could weigh about 1 kilogram
Volume:
An eyedropper holds about 1 milliliter
A juice box holds about 25 centiliters
A soda bottle holds about 1 liter
A kid’s pool could hold about 1 kiloliter
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