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it means make a number such as 2.34 to a number with only one digit after the decimal point 2.34 to 2.3. it is simple really. what you do it look at the number on the right and if it is 1-4 you leave it as it is but if it is 5-9 you round up so you increase the number by 1. if the number is bigger such as 1.343 then you look at the first two digits on the right and if it is 1-49 then you round down but if its is 50-99 you round up.

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12y ago

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