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The Measure of Things:
The Metric System
The Measure of Things:
The Metric System
Why do we need a common system of
measurement ?
Why do we need a common system of
measurement ?
People can SHARE information
Communication is easier
People can SHARE information
Communication is easier
Why METRIC?Why METRIC?
Simple System Base 10, no messy
calculations Easier Conversions
Simple System Base 10, no messy
calculations Easier Conversions
Two systemsTwo systems English system
12 in. = 1 foot 3 ft. = 1 yard
How many inches in 2.56 yards?
English system
12 in. = 1 foot 3 ft. = 1 yard
How many inches in 2.56 yards?
Metric system
10 mm = 1 cm 100 cm = 1 meter How many
milliimeters in 2.56 meters?
Metric system
10 mm = 1 cm 100 cm = 1 meter How many
milliimeters in 2.56 meters?
2.56 meters x 10, x 10 again,
2,560 centimeters
Take 2.56 yards x 3 ft, then times 12 inches
92.16 inches in 2.56 yards
UnitsUnits Units are written
as one or two lowercase letters.
Units are written as one or two lowercase letters.
One exception!
liter is capital L Why not
lowercase?
One exception!
liter is capital L Why not
lowercase?
kg kg mm mm
L L mL mL g g
Base UnitBase Unit
A base unit is the standard for measurement.
A base unit is the standard for measurement.
Mass: gram
Volume: liter
Distance: meter
Metric Conversions
Metric Conversions
Kilo0.001units
Hecto0.01units
Deka0.1units
Basic Unit
1
Deci10
units
Centi100units
Milli1000units
To convert to a smaller unit, multiply by ten.(or, simply move decimal point to the right)
To convert to a larger unit, divide by 10(or, simply move the decimal point to the left)
PracticePractice
Kilo0.001units
Hecto0.01units
Deka0.1units
Basic Unit
1
Deci10
units
Centi100units
Milli1000units
Using the units for Mass(grams): How many centigrams in 15 grams?How many kilograms in 32 grams?
What is mass? What is volume?
What is mass? What is volume?
Mass is the amount of matter in an object.
Volume is the amount of space something takes up.
Mass is the amount of matter in an object.
Volume is the amount of space something takes up.
