Convert these numbers between standard form and normal numbers

Question 1:

8.97× 10 3
8970

Question 2:

4.79× 10 3
4790

Question 3:

3.15× 10 -2
0.0315

Question 4:

599000
5.99× 10 5

Question 5:

430000
4.3× 10 5

Question 6:

0.00897
8.97× 10 -3