It's already there.
You do nothing.
About 115 in three significants, no decimals!
120
115 rounded to the nearest ten is 120
that would be 1.5
431-115
No.
115.1429
Anything from 115 to 124.
Rich Franklin won by KO in 1st round
The nearest hundred to 115 is 100. That would be rounding down. The nearest hundred rounding up is 200.
38 1/3 or 38.333333
115 - 102 + (3 x 5) = 30