What is 4 raised to the fourth power means

It means that you take the number 4 and you multiply it four additional times tonget your answer

It means that 4 is multiplied by itself 4 times. It can be written like this 4^4 or 4 with a tiny 4 above it. This number is an exponent. So if we write it out it would be

4•4•4•4=256