Answer:
See Explanation
Step-by-step explanation:
1.
Standard Form: 2 * 10^8
The number is expanded as follows:

So: 

Word Form: Two hundred million
2.
Standard Form: 3.5 * 10^7
The number is expanded as follows:

So: 

Word Form: Thirty five million
3.
Standard Form: 9 * 10^9
The number is expanded as follows:

So: 

Word Form: Nine billion
4.
Standard Form: 5.5 * 10^7

So:


Word Form: Fifty five million
5.
Standard Form: 4.3 * 10^7

So:


Word Form: Forty Three million