Lesson 3. Prefixes

LESSON 3. PREFIXES

10^9 giga (G)

10^6 mega (M)

10^3 kilo (k)

10^-1 deci (d)
10^-2 centi (c)

10^-3 milli (m)

10^-6 micro (u) it was originally the squiggly u-like thing but I don't know how to type it! 

10^-9 nano (n) 

Prefixes x multiplication factor = Base Unit

Base unit / multiplication factor = Prefix

• 4kg = 4000g
• 0.03 m = 3 cm
• 2 x 10^-9 = 2

As the units get smaller, the value gets bigger OuO

Exercises! 

0.0002s in ms

0.0002/10^-3 = 0.2ms OR 0.2 x 10^-3 s = 0.2ms

480ug in mg

ug = 1/1000 000g --> (x1000) --> m = 1/1000g
= 0.480mg

7.2km in mm

7.2 km = 7200m

m = ^-3 (you add the 3 zeros behind!)

= 7 200 000mm 

36km/1hr (Convert 36km/h to m/s)
= 36 000m/3600s
= 10 m/s

Convert 6g/cm^3 into kg/m^3

6g/1cm^3

= 0.006kg / (0.01m)^3

= 6000kg/m^3

Force = mass x acceleration

= mass x (distance/time) / time