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When rounding to two decimal places...

117 14 July 22, 2012 at 06:51 PM in Question
What would you round 5.3345 to?

I say 5.33 but someone else says 5.34. The complete answer to the problem changes a good amount for the different values. Anyone know the exact rules to rounding in this situation?
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cr8ter
07-23-2012 at 09:32 AM.
07-23-2012 at 09:32 AM.
Quote from menace33 :
Answered that already but the number is 5.3345 to start, not 5.335.


if the question was round 5.3345 to three decimal places what would the answer be?




I think the answer boils down to just disregarding everything past the 4 since it's less than 5 and the 3 stays a three.

I did it in two steps which was wrong.
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MissyMooMoo
07-23-2012 at 09:50 AM.
07-23-2012 at 09:50 AM.
Quote from NeutronStar :
if the question was round 5.3345 to three decimal places what would the answer be?




I.
It would be 5.335.
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menace33
07-23-2012 at 10:25 AM.
07-23-2012 at 10:25 AM.
Quote from MissyMooMoo :
It would be 5.335.
Correct
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stealth
07-23-2012 at 10:29 AM.
07-23-2012 at 10:29 AM.
5.33 if rounding to two digits. nod Glasses2

You only round it once, you don't round and then round again. Nono1
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cr8ter
07-23-2012 at 10:29 AM.
07-23-2012 at 10:29 AM.
OK, now round 5.335 to two digits.

That would be 5.34
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stealth
07-23-2012 at 10:30 AM.
07-23-2012 at 10:30 AM.
Quote from NeutronStar :
OK, now round 5.335 to two digits.

That would be 5.34
This is wrong. See above.
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PaintTheSkyGrey
07-23-2012 at 10:32 AM.
07-23-2012 at 10:32 AM.
u guise gettin trollt
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Maleficent
07-23-2012 at 10:39 AM.
07-23-2012 at 10:39 AM.
Quote from PaintTheSkyGrey :
u guise gettin trollt
Iagree

I can't believe this thread spawned 30+ posts about rounding numbers. LMAO
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cr8ter
07-23-2012 at 10:44 AM.
07-23-2012 at 10:44 AM.
Quote from stealth :
This is wrong. See above.


not true. start with 5.335 and try any rounding calculator you like. The answer is 5.34.


I think for most people, 5.3345 rounds to 5.33. But IMO 5.34 is a more accurate representation.
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Frogstar
07-23-2012 at 10:52 AM.
07-23-2012 at 10:52 AM.
We should all start doing math in whatever way we think is most appropriate nod
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cr8ter
07-23-2012 at 10:53 AM.
07-23-2012 at 10:53 AM.
especially if close enough is all you demand.

laugh out loud
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MissyMooMoo
07-23-2012 at 10:54 AM.
07-23-2012 at 10:54 AM.
Quote from NeutronStar :
not true. start with 5.335 and try any rounding calculator you like. The answer is 5.34.


I think for most people, 5.3345 rounds to 5.33. But IMO 5.34 is a more accurate representation.

Math is not a subjective subject.


5.3345 rounds to 5.33
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menace33
07-23-2012 at 10:59 AM.
07-23-2012 at 10:59 AM.
Quote from NeutronStar :
not true. start with 5.335 and try any rounding calculator you like. The answer is 5.34.


I think for most people, 5.3345 rounds to 5.33. But IMO 5.34 is a more accurate representation.
That would be most certainly true if there were no mention of what decimal places to round to but there is that caveat so that has to be taken into consideration. In this case, 5.33 is correct as the 5 in the ten thousandths place is inconsequential to the rounding up or down.
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cr8ter
07-23-2012 at 11:37 AM.
07-23-2012 at 11:37 AM.
Quote from MissyMooMoo :
Math is not a subjective subject.


5.3345 rounds to 5.33




well then riddle me this:


1) Round 5.3345 to 3 decimal places. (answer = 5.335)

2) Take your answer from 1 and round it to two decimal places. (answer = 5.34)

3) Why are the answers not the same?

Quote from menace33 :
That would be most certainly true if there were no mention of what decimal places to round to but there is that caveat so that has to be taken into consideration. In this case, 5.33 is correct as the 5 in the ten thousandths place is inconsequential to the rounding up or down.


agreed
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Last edited by cr8ter July 23, 2012 at 11:38 AM.

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MissyMooMoo
07-23-2012 at 12:56 PM.
07-23-2012 at 12:56 PM.
Quote from NeutronStar :
well then riddle me this:


1) Round 5.3345 to 3 decimal places. (answer = 5.335)

2) Take your answer from 1 and round it to two decimal places. (answer = 5.34)

3) Why are the answers not the same?





agreed
Because, your original math problem and the math problem stated above are not the same math problem.

5.3345 rounded to the second decimal equals 5.33

5.3345 rounded to the third decimal equals 5.335

5.335 rounded to the second decimal equals 5.34


* This post was made possible by Math. Whee
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