Math Is Fun Forum

evinda

Member

Registered: 2013-04-13

Posts: 105

find rounding of a number!!

Hello!!
How can I find the rounding of the number 0.0238095238095,with precision t=5 ?
First I have to find the float number,that is 

,right?
Is then the rounding :

or am I wrong??

Last edited by evinda (2014-01-06 09:15:18)

SteveB

Member

Registered: 2013-03-07

Posts: 595

Re: find rounding of a number!!

Wouldn't it be more conventional to give the answer as:

I agree it is an upwards round and that you should keep the zero.

Last edited by SteveB (2014-01-06 09:25:50)

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: find rounding of a number!!

Hi evinda;

What does t = 5 mean?  5 places? 5 significant digits? An error of .5?

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

evinda

Member

Registered: 2013-04-13

Posts: 105

Re: find rounding of a number!!

Hi evinda;

What does t = 5 mean?  5 places? 5 significant digits? An error of .5?

5 significant digits!!!

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: find rounding of a number!!

Normalizing the number means to get the mantissa to be a single digit (not zero ) and can be positive or negative.

That is normalized and has 5 significant digits.

But did they want you to nomalize?

Try this handy dandy little calculator:

http://www.mathsisfun.com/rounding-numbers.html

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

evinda

Member

Registered: 2013-04-13

Posts: 105

Re: find rounding of a number!!

Normalizing the number means to get the mantissa to be a single digit (not zero ) and can be positive or negative.

That is normalized and has 5 significant digits.

But did they want you to nomalize?

Try this handy dandy little calculator:

http://www.mathsisfun.com/rounding-numbers.html

Great!!!!Thank you so much for your help!!!!!

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: find rounding of a number!!

Hi evinda;

It is a handy little calculator is it not?

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

evinda

Member

Registered: 2013-04-13

Posts: 105

Re: find rounding of a number!!

Hi evinda;

It is a handy little calculator is it not?

Yes,it is!

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: find rounding of a number!!

Hi;

Everything going okay?

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.