9) 42/5= 8.4 but you can't have part of a car so round up to get 9 cars
10) 39.75/3= $13.25 per pair
11) 500/22=22.72 repeating, I would say an average of 23 mile per gallon
12) Kilograms- 0.01 and milligrams- 10,000
13) 112/35= 3.2 or 4
14)162 times 210= 34020 and 51 times 81= 4131
34,020-4,121= 29,889 ft and 3,321 yds
I really hope that I helped you!!!