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Rounding numbers in microsoft excel

by Dell
Tags: excel, microsoft, numbers, rounding
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Dell
#1
Dec10-09, 11:52 AM
P: 591
i need to round numbers in a spreadsheet 2 decimal points, in a way that:

for a number with a.byX

for x>5 i need to round upwards
for x<5 i need to round downwards
for x=5 i need to round up if y is odd and round down if y is even

for example

0.563~0.56
0.566~0.57
0.575~0.58
0.565~0.56

i tried using if, roundup, rounddown, floor,, cant seem to get it right
any ideas
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Integral
#2
Dec10-09, 12:32 PM
Mentor
Integral's Avatar
P: 7,320
Just set the cell format to show the number of digits you want. Setting the precision in the cell format does exactly what you need.
Dell
#3
Dec10-09, 12:34 PM
P: 591
no, i need it to round the numbers for me, i need them for calculations and i need them to be exacly the way i stated

FredGarvin
#4
Dec10-09, 01:45 PM
Sci Advisor
FredGarvin's Avatar
P: 5,095
Rounding numbers in microsoft excel

There is always the ROUND function. You can also do a user defined function.
Dell
#5
Dec10-09, 01:51 PM
P: 591
but the round fuction always rounds 5 upwards,
0.5->1
1.5->2
2.5->3
3.5->4.....

i need
0.5->0
1.5->2
2.5->2
3.5->4
4.5->4

always rounding to the even number,
only that i need it to the 2nd decimal point no to the whole number
zgozvrm
#6
Dec10-09, 04:13 PM
P: 754
As long as you're only dealing with rounding numbers with 3 decimal places down to 2 decimal places, this will work:

=IF((RIGHT(A1,1)<>"5"),ROUND(A1,2),IF(ISODD(A1*100),ROUND(A1,2),TRUNC(A 1,2)))

Enter this formula in any cell except A1.
Enter your number in cell A1.

To make this work for other types of numbers, I would write a user defined function in VBA.
edvinf
#7
Dec10-09, 06:10 PM
P: 10
Quote Quote by Dell View Post

0.563~0.56
0.566~0.57
0.575~0.58
0.565~0.56
Your example seems to be flawed. Shouldn't 0.566~0.56 , according to your specification?
zgozvrm
#8
Dec10-09, 06:14 PM
P: 754
The example's not flawed, the explanation is a bit unclear though.

"b" refers to the 1st digit to the right of the decimal point
"y" refers to the 2nd
"x" refers to the 3rd

His rules state that for "x" > 5, round upward, therefore in 0.566,
"x" is equal to 6 which is greater than 5, so round upward to 0.57
edvinf
#9
Dec10-09, 06:18 PM
P: 10
I see. sorry. In hindsight I see that it was perfectly explained all along.
zgozvrm
#10
Dec10-09, 06:45 PM
P: 754
Quote Quote by zgozvrm View Post
To make this work for other types of numbers, I would write a user defined function in VBA.
I've already written VBA code for this.
Let me know if you're interested.


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