0
Wiki User
90
It can be rounded to 99 or 98.6
It is 99.
99 rounded to the nearest tens place is 100
98.6m rounded to the nearest meter is 99 meters.
9.9
100
99 x 10 - 99 x 9 = 99(1 x 10 - 1 x 9) = 99(10 - 9) = 99(1) =99
9.94987 (rounded)
400