Metric unita are based on the decimal system and lor that reason are easier to manipulate than unit« to the English system. Additionally, units of dif-
(1 ) Mega-<2» Kilo-(31 Hecto-<41 Deca-(5) Deci-<6) Centri-<7) Milli-<81 Micro-
b. Units of Measure.
(1) Linear measure.
Baric unit is the meter <m). 1,000 m = 1 kilometer (km) 1,000 millimeter (mm) = 1 m 100 centimeter (cm) = lm
1,000« = 1 kilogram <kg\ 1,000 milligram (mg) = lg
(3) Velocity. Kilometers per hour (kmph) and meters per second (m/s).
(4) Temperature.Temperature is measured in degrees centrigrade.
c. Common Usage. Although all of the prefixes mentioned in a above can be used with each different type of unit, only a few of these are commonly used.
<1) In length measurements the meter, kilometer, centimeter, and millimeter are com-
a. Linear Measure.
lm = 39.37 in I m = 3.28 ft lm = 1.09 yd 1 km = .62 mi b. Weight.
1 g = 15.43 grain lg = ,035 oft lkg = 35.27 oft lkg = 2.20 lbs c. Velocity.
1 m / sec a 3.28 ft / sec 1 m / sec s'2.24 mph 1 kmph = .62 mph ferent types, i.e., weight and length, use the same prefixes to establish their relationship to the basic unit.
a. Metric Pre fixe*.
1,000,000 1,000 100 10
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