I would believe that the answer is 20,00 because i like to use the saying 5 or above give it a shove, for or less let it rest. So you use this saying for the number behind the number it says to round to. Which in this case is 4 so because according to the saying it says let it rest if the number is 4 or less. So that is how i got my answer :D Hope you understand now!!!
If the number next to the highest place value is more than or equal to 5change all digits to 0 and add 1 to largest place value digit. If number next to highest place value is less than 5 change all digits to 0 and leave the highest place value alone.
