Nine to the second power is just nine times nine.
Any number with a power is just a number that can multiply itself.
2
9 =9*9=81
1,000,000,000,000 and 1,000,000,000
Nine to the fifth power looks like this: 95
0.08 in standard form is: 8.0 × 10-2
14
156 times 10^7 is 1.56*10^9 in standard form or scientific notation
6,561
94 = 6,561
93 is 729
19
5
1,000,000,000,000 and 1,000,000,000
2/9
9 times 10 to the power negative 1
Nine to the fifth power looks like this: 95
1.08 x 10^9 in standard form is 1,080,000,000
9,020
859,016,000 this is around 8.6billion