The nearest hundred is the 4. The next number is a 6, so you round up. Thank goodness that 6 is not a 5. Then you have to listen to whatever your instructor tells you about rounding when the next number is a 5.
However if the next number is 6 or 7 or 8 or 9, then you round up. It the next number is a 1,2,3,4 then you don't do anything.
12.146 round to 12.15
12.145 depends on what you are told about 5
12.142 do nothing the answer to the nearest hundredth is 12.14