Metric Measurements

1
Metric Measurements
2
Scientific Measures

• All measurements in the class will use the metric
  system
• The metric system is the basis for the
  International System of Units (SI)
• This is the international standard for scientific
  measures
• Based on multiples of 10 for easy conversion on
  one measure to another

3
Metric System (SI) Units
4
Metric prefixes
5
Metric Conversions

• Converting one metric measure to another involves
  multiplying or dividing by the proper power of 10
• When going from smaller to larger measures, the
  number of units will decrease.
• i.e. 100 cm in 1m
• When going from larger to smaller measures, the
  number of units will increase.
• i.e. 1km contains 1000m

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Example Problem 1

• Q How many decimeters are in one meter?

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Example Problem 1

• Q How many decimeters are in one meter?
• A Since meter has no prefix it equals 1
• Going from larger measure to smaller measure
• meter 1
• deci 10-1 0.1
• 1m/0.1dm10
• There are 10dm in 1m

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Example Problem 2

• Q How many kilometers are in one centimeter?

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Example Problem 2

• Q How many kilometers are in one centimeter?
• A Going from smaller measure to larger measure
• kilo 103 1000
• centi 10-2 0.01
• first convert cm to m
• 1cm0.01m (1 one hundredth of a meter)
• then convert m to km
• 0.01m 1km/1000m

10
Example Problem 2

• Q How many kilometers are in one centimeter?
• A Going from smaller measure to larger measure
• kilo 103 1000
• centi 10-2 0.01
• first convert cm to m
• 1cm0.01m (1 one hundredth of a meter)
• then convert m to km
• 0.01m 1km/1000m 0.00001km
• There are 0.00001km in one cm

11
Example Problem 3

• Q How many milliliters are in one dekaliter?

12
Example Problem 3

• Q How many milliliters are in one dekaliter?
• A Going from larger measure to smaller measure
• milli 10-3 0.001
• deka 10 10
• first convert dal to l
• 1dal10l
• then convert l to ml
• 10l 1000ml/1l

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Example Problem 3

• Q How many milliliters are in one dekaliter?
• A Going from larger measure to smaller measure
• milli 10-3 0.001
• deka 10 10
• first convert dal to l
• 1dal10l
• then convert l to ml
• 10l 1000ml/1l 10000ml
• There are 10,000ml in one dal.