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The base unit of lenght in the metric system is the metre. One metre is slightly larger than a yard and is approximately equal to 39.37 inches.
- a. the metre is the base unit of length in the metric system (TRUE)
- b. a yard is longer than a metre (FALSE)
- c. a metre is slightly longer than a yard (TRUE)
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Metric measurement is based on a decimal system which means that its units are related by multiples of ten (such as 10,100,1000) or divisions of ten.
Most common prefixes are.
- kilo _km-1000
- hecto_hm-100
- deka_dam- 10
- deci_m- 0.1 or 1/10
- centi_ dm- 0.01 or 1/100
- milli_ mm- 0.001 or 1/1000
- centi_cm
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The metric units most used in hospital terminology are the metre, decimetre, centimetre, and millimetre.
- The realtionship demonstrated by the metric ruler are;
- 1 dm= 10 cm or 1cm= 0.1 dm
- 1cm= 10 mm or 1mm= 0.1 cm
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km(10)hm(10)dam(10)m(10)dm(10)cm(10)mm
- 1. To convert any unit to a unit on its right, multipy by the number of 10's separting the two units. (move the number to the right the same number of places as there are 10's)
- 2. to convert any unit to a unit on its left, divide by the number of 10's separating the two units. (move the decimal point to the left the same number of places as there are 10's)
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45.8 dm=___mm
km(10)hm(10)dam(10)m(10)dm(10)cm(10)mm
(M) is one 10 to the left of (DM) on the chart. Move the decimal point one place to the left (45.8). thus, 45.8 dm=4.58m
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0.5m= ____mm
km(10)hm(10)dam(10)m(10)dm(10)cm(10)mm
MM is three 10's to the right of M on the chart. Move the decimal point three places to the right (0.500). thus, 0.5 m= 500 mm.
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