1. Units and Conversions International System of Units (SI)
-based on seven base units:
Base Unit Name Symbol
Length meter m
Mass kilogram kg
Time second sec
Temperature Kelvin K
Amount of substance mole mol
Electric current ampere A
Luminous intensity candela cd

2. Units and Conversions Additional Units Volume Unit Symbol liters L
cubic centimeters cm3
milliliter mL
Pressure Unit Symbol
kiloPascal kPa
Torr / millimeters of mercury Torr / mm Hg
atmosphere atm
Other Mass Units Symbol
gram g
milligram mg
Other Temperature Units Symbol
Fahrenheit °F
Celsius °C

3. Units and Conversions Kilo (k) = 1000 Cent (c) = .01 Milli (m) = .001
Millenium  1000 years in 1 millenium
1 cent  100 cents in a dollar
kilogram  1000 grams

4. Units and Conversions
Micro (µ) =
Nano (n) =

5. Units and Conversions To solve problems: “big units” “small units”
kilo, hecto, deca deci, cent, milli
big to small  move decimal point to right
small to big  move decimal point to left OR
Use conversions…
see examples
“base units”
grams, liters
meters

6. Units Conversions 1. 42 cm = ? m 2. 16 mL = ? L 3. 2 km = ? m
m to cm
98.26 mg to g
cm to m
mL to L
mL to L
L to mL
g to mg
g to kg
L to mL
m to cm
cm to m
m to mm
m to mm
km to m
mL to L
L to mL
mg to g