Answers:
18/25
1/2
1/81
2.9x10^6
1.2x10^8
1/24
58.02
7.5x10^-4
7.75
Idaho has the smallest population
0.000857
3.141592
1/3
3.3 with the bar above the second 3 (non-terminating)
2 5/8
-52/63
19/65
1 13/45
-1/-6
4/9
2
3/5
hope this helps :)