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Metrics - Interactive Phun Curriculum
Definition:
metric system- a decimal system of units based on the meter as a unit length, the kilogram as a unit mass and the second as a unit time.

NOTES

The metric system of measurement was developed in 1795. A modern form of the metric system, called the International System, or SI, was adopted in 1960. SI provides standard measurements that all scientists around the world can understand.

The metric system is convenient because unit sizes vary by multiples of 10. When changing from smaller units to larger units, divide by a multiple of 10. When changing from larger units to smaller, multiply by a multiple of 10. To convert millimeters to centimeters, divide the millimeters by 10. To convert 30 mm to centimeters, divide 30 by 10 (30 mm equal 3 cm).

Prefixes are used to name units. Look at the table below for some common metric prefixes and their meanings. Do you see how the prefix kilo-attached to the unit gram is kilogram, or 1,000 g?

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pp28167 comment 0 Dec 15 2006, 12:53 PM EST by pp28167
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