(of a number) altereing for convenience of expression or calculation, for example to the nearest whole number or multiple of ten or five:
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It is expressing a decimal number, with lots of digits, by a number with fewer digits but one that contains the significant information from the number.
it is like when you have a number you use that number to make it bigger
when you round a number to the nearest whole digit such as 400,567 thousand rounded to the nearest hundred is 400,600
20 rounding units. 20.0 rounding tenths 19.8 rounding hundredths 19.76 rounding thousandths 19.765 rounding tenthousandths 19.7649 rounding hundred thousandths
If you are rounding to 100ths it is 1.73 . If you are rounding to 10ths it is 1.7 . If you are rounding to integers it is 2 .
The process of rounding is the same no matter what place you're rounding to.