1. Metric Prefixes One larger thing equals many smaller things Prefix
Abbreviation
One larger
Many smaller
centi-
(c)
1 g =
100 cg
kilo-
(k)
1 kg =
1000 g
Mega-
(M)
1 Mg = g
deci-
(d)
10 dg
milli-
(m)
1000 mg
micro-
(µ) µg

2. Prefix Questions ______ m = 1 km ______km = 1 m
milliliter or centiliter
kilogram or megagram
millimeter or kilometer
A penny = 1 ______ dollar
A dime = 1 ______ dollar
A megabuck = ________ dollars
A kilopenny = __________ dollars (tricky)
1000
0.001
centi
deci 10

3. Prefix to Base Unit Questions
_________
kilometers
grams
Mass of a teaspoon of water
liters
Distance to beach
micrograms
Volume of balloon
Megaseconds
Time light travels from earth to nearest star
Mass of an atom
Episode 104

4. Conversions Dimensional Analysis or T-Factor Convert 152 cm to m
Write in form of a question
? M = 152 cm
Conversion factor – a statement of fact expressed as a fraction equaling one
Allows you to convert from one unit to another unit of measurement
Fact: 1m = 100 cm, so or
Set units to cancel out
Add numerical values for units
Do the math!
1 m
100 cm
100 cm
1 m
152 cm 1 m
= 1.52 m
100 cm
Episode 104

5. Another Conversions Dimensional Analysis or T-Factor
Convert 62 kg to g
Write in form of a question
62 kg = ? g
Conversion factor
Fact: 1 kg = 1000 g, so or
Set units to cancel out
Add numerical values for units
Do the math!
1 kg
1000 g
1000 g
1 kg
62 kg
1000 g
= g 1 kg
Episode 104

6. Divide or Multiply? LET THE UNITS TELL YOU! Convert 1700 µs to ds
Write in form of a question
1700 µs = ? ds
Conversion factor
Fact: 1 s = 1x106µs, so or
Fact: 1 s = 10 ds, so or
Set units to cancel out
Add numerical values for units
Do the math!
1 s
1x106µs
1x106µs
1 s
1 s
10 ds
10 ds
1 s
1700 µs 1 s 10 ds
= ds
1x106 µs 1 s
Episode 104

7. Problem Set One 59 dg to g 9.8 cm to µm 60 L to mL 1.4 x 10-7 m to km
4500 ks to Ms
How many yards are in km?
(2.54 cm = 1 inch)
5.9 g
98000 µm
60000 L
1.4 x km
4.5 Ms
yds
Episode 104