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Round down
To round off 430 you will have to round up or down. To round down then it till be 400 to round up it will be 500
To round to the nearest whole number, round down to 60. To round to the nearest hundred, round up to 100.
18.27 ( 5 and up round up 4 and down round down :P )
It is higher, so it would round down.