BRAINCAKE

Power Prefixes

Edexcel AS-level PhysicsPhysical QuantitiesLesson 3 of 4

tera 1012
giga 109
mega 106
kilo 103
deci 10-1
centi 10-2
milli 10-3
micro 10-6
nano 10-9
pico 10-12
femto 10-15

A prefix is placed in front of a unit to show that the unit is multiplied by a power of ten. It lets us write very large or very small values without long strings of zeros, for example 3 km instead of 3000 m, or 25 mA instead of 0.025 A.

Sign in free to see the rest of this lesson, the R.E.C.I.P.E. recall steps and the quiz

BrainCake is free. Make an account in seconds and pick up where this page stops.

More in Physical Quantities

All 4 lessons in Physical Quantities · All Edexcel AS-level Physics topics