Step-by-step explanation: When rounding a number to a given place, look at the next place y o the right. If that digit is 5 or more, "round up" by adding one to the given place.
If the number to the right is 4 or less, leave the given place "as is"
In this example, the hundredths place is 4, the place to the right has an 8. So you round up the 4 to a 5. You end up with 59.65
Well, since it is asking for an average, we have to add 78+89+87+96= 350... then we divide by 4 which would be 87.5 which IS greater than 80 :) and less than 90 :)
