Exponents

Prefix- Name- Exponent

tera trillion 10^12
giga billion 10^9
mega million 10^6
kilo thousand 10^3
hecto hundred 10^2
deca ten 10^1
uni one 10^0 any number to the zero power is just 1
decimal goes here
deci tenth 10^-1
centi hundredth 10^-2
milli thousanth 10^-3
micro millionth 10^-6
nano billionth 10^-9
pico trillionth 10^-12

10^4 = 10*10*10*10