125
Yes one third is equal to five fifteenths.
Five to the third power can be written 53
The square root of five to the third power is 11.1803398875 (rounded).
Five to the negative third power = 0.008
512
8.1 to the third power equals 531.441
35
5^2
125
Two and five tenths to the negative third power equals 0.064
8 to the power of 1/3 is equal to 2.67