Question

explain why 323.202 is least
than 323.21 even though 202 is Grater than 21

Answer 1

it is less than 324.21, because as you can see, all the numbers are equal until you get to the 0 & 1, and 1 is greater than 0

Answer 2

323.21 is greater than 323.202 because of the placement in tenths, hundredths and thousandths, written out as a fraction it would be:
202/1000 versus 21/100
which one is bigger? the 21/100, so its of greater value