You first take the place to the right. If it is 5 or above, then it rounds up. If it is 4 or below, it stays the same.
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Name the place value, and we'll zero in on it.
You cannot round a number with a place value larger than the place value you seek to round it to. i.e. You cannot round thousands to hundreds, hundreds to tens, tens to ones, etc.
It is 63.452
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To round to 1 decimal place you look at the numbers after the first decimal place onwards. If the value is more than 5 (or 50 or 500 etc) then round up, if the value is less than 5 then round down. If the value is exactly 5, then some statistically naive people suggest round upwards. The correct procedure, so as not to introduce an upward bias, is to round up or down so that the last digit left is even. Here the number after the first decimal place is 74 - well above 50. So you round up. 2.8xx, rounded up is 2.9