It's already there.
It is 200900, as in the question.
894 to the nearest 10 = 890
200
It is already rounded to the nearest 10 as 240
195 to the nearest 10 is 200.
because 199 rounded to the nearest 10 is 200, so 199 to the nearest 100 is 200.. Because 200 is both a multiple of 10 and 100.
900
h
900
200
210 is the nearest 10 and 200 is the nearest 100.
900
200