Question

estimate the quotient when 20.8 is divided by 6.87by rounding both decimal numbers to the nearest whole number before dividing

Answer 1

20.8 rounded to the nearest whole number is 21
6.87 rounded to the nearest whole number is 7
so 21/7 = 3

Answer 2

a whole number is a number of the set {0,1,2,3,4,5,6,7,...}