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CBSE Class 11-science Answered

in rounding off numbers......ex i have number3285436 i have to round off up to 3 significant numbers so after rounding off it will be 328 ,my question is shall i look at 4th digit or first i look at 6 and so on....plz reply soon
Asked by Swati .Anand | 26 Apr, 2012, 04:53: PM
answered-by-expert Expert Answer
The given number is 3285436.
This number can be rounded off to 3 significant digits as 3290000.
So, it is clear that to round off to 3 significant digits, just look at the fourth digit.
 
Following are some more examples:
The number 24314 can be rounded off to to 2 significant digits as 24000.
The number 839524 can be rounded off to 3 significant digits as 840,000.
Answered by | 26 Apr, 2012, 05:26: PM

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