An appropriate unit of measurement for the area of the a soccer field is meters. It could never be miles, because that's way too long. Or millimeters, because that's way too short. Soccer fields are usually meters and meters long, so a unit of measure that is appropriate for an area of a soccer field is meters.
Since 60 is 60 units away from 0, it is 60.
All numbers that only have one and itself as factors are prime. Therefore, to tell if a number is prime simply find it's factors. If it has more than two factors than it is not a prime number.
For the first question could you tell me how many students hade a Mark less that 20%
In order to find this you must divide 365 by 30 to get a final answer of 12.17.