Metrics Unit Vocabulary Words
1.
2.
3.
4.
5.
6.
7.
milli: 1/1000 th (0.001) of a base unit.
centi: 1/100 th (0.01) of a base unit.
deci: 1/10 th (0.1) of a base unit.
base unit: A quantity with no prefix. (g,m,l,s)
Deka: 10 times a base unit.
hecto: 100 times a base unit.
kilo: 1000 times a base unit.
Prefix Base unit
Prefix Base unit
Examples: ms = milliseconds, kg = kilogram
Measurements and Metrics Notes Unit 1
• Standard Unit:
Units everyone agrees upon
Ex: 12 inches = 1 foot
1 kilogram = 2.2 pounds
• Can you think of a reason why standard units are important?
Standard units allow for consistent measurement between
different groups of people.
The METRIC SYSTEM is a great system of standard units.
• The metric system is based on changes or multiple of 10.
• (This means you simply have to move the decimal point in
order to convert between units.)
kilo
hecto Deka
base
Unit
deci
centi
milli
The METRIC SYSTEM is a great system of standard units.
kilo
hecto Deka
base
deci
centi
milli
Unit
• You may have also used acronyms:
king henry Doesn't usually drink chocolate milk
kids have Dropped basically dead converting metrics
The METRIC SYSTEM is a great system of standard units.
g
m
l
s
kilo
hecto Deka base deci centi milli
Steps for converting from one metric unit to another:
1. Locate the decimal in the number.
2. Find the prefix you are starting in.
3. Find the new prefix you want to convert to.
4. Count the number of moves it takes to get there, and
the direction you moved in.
5. Move the decimal point in the same direction and the
same number of moves.
kilo
hecto Deka
base
deci
centi
milli
Try this: Change 250 millimeters into decimeters.
1.
Locate the decimal in the number.
250.
2.
3.
4.
5.
Find the prefix you are starting in.
millimeters
Find the new prefix you want to convert to.
decimeters
Count the number of moves it takes to get there, and the direction you move
in.
2 moves to the left
Move the decimal place in the same direction and the same # of places.
2.50
Try the next examples on your own
kilo
1.)
hecto Deka
base
deci
centi
milli
100 grams = _______________________ kilograms
100.
.100
kilo
hecto Deka
base
deci
centi
milli
2.) 50 Dg = __________________________ centigrams
50.
50000.
kilo
3.)
hecto Deka
base
deci
centi
milli
75 mg = __________________________ hg
75.
.00075
kilo
4.)
hecto Deka
base
deci
centi
milli
8 kg = ___________________________ dg
8
80000
STANDARD UNITS WITHIN THE METRIC SYSTEM
Measures
Tool (measured with)
Base unit
Length
Ruler/Meter stick
Meter (m)
Mass
Balance
Gram (g)
Temperature
Thermometer
Volume
Force
Graduated Cylinder
Ruler (length x width x height)
Spring Scale
Celsius (◦C)
Liter (L)
Cubic Centimeter (cm3)
Newton (N)
Time
Stopwatch/ Clock
Second (s)
Energy
------------
Joules (J)
Power
------------
Watt ( kg∙m2 / s2)
Derived Units:
→ Units made up of more than one standard unit.
Examples:
1. AREA ( length x width) = cm x cm = cm2
2. VOLUME (length x width x height) = cm x cm x cm = cm3
3. DENSITY = mass/volume = (grams/milliliter) = g/mL
4.
SPEED = distance/time = (meter/second) = m/s
or
(miles/hour) = mi/hr
or
(kilometers/minute) etc