the larger multiple
As a general rule, numbers that are halfway round up.
the higher multiple of ten
Usually the higher hundred.
To round a number to the nearest 50, first identify the two multiples of 50 that are closest to the number. If the number is halfway between two multiples (e.g., 25 or 75), round up to the higher multiple. For numbers below the halfway point, round down to the lower multiple. For example, 120 rounds to 100, while 130 rounds to 150.
You Round up to the next higher number
As a general rule, numbers that are halfway round up.
the larger multiple
the higher multiple of ten
Usually the higher hundred.
To round a number to the nearest 50, first identify the two multiples of 50 that are closest to the number. If the number is halfway between two multiples (e.g., 25 or 75), round up to the higher multiple. For numbers below the halfway point, round down to the lower multiple. For example, 120 rounds to 100, while 130 rounds to 150.
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You Round up to the next higher number
Round up.
600
If a coordinate is half way between a number, eg (2.3,74) then you round to the nearest whole number so it would be (2, 74) (round 2.5 to 3 not to 2, round 2.1 to 2 not 3 and round 2.7 to 3, this is because the number after the decimal place is either closer to one or the other)
463 rounded to the nearest hundred would be 500. Normally if a number is past the halfway mark between hundreds (in this case, if it's past 450) you round up. If not, you round down. If your number is exactly at the halfway mark (i.e. 450 exactly) you normally still round up.