Bit of maths help please

[BizGurl]

I've trying for the best part of an hour to work out what 30% of a hundred is but my calculator seems to be playing up. Typical! Can anyone help me out.

 

[Jeff FV]

Percent means out of a hundred, so 30% of 100 is 30.

If it were a harder number to find 30% of (say 30% of 270) I'd start by finding 10% by dividing 270 by 10.

so 10% of 270 = 27

and 30% is 10% x 3 so 27 x 3 = 81.

Therefore 30% of 270 is 81.

The percentage button on a calculator is pants, is it finding a percentage of or turning a number into a percentage? the scope for confusion is immense - I tell my pupils to never use it. Easier to convert the percentage to a decimal (by dividing by 100) and work from there.

Believe it or not, I even written a couple of blog posts on percentages! ( here and here)

Sorry - I've waffled a bit! To re-iterate, the answer to your question is 30.

J

 

[vvaannmmaann]

Sadly I have an app that does percentages.Very good it is to.

 

[DotNetWebs]

I've trying for the best part of an hour to work out what 30% of a hundred is but my calculator seems to be playing up. Typical! Can anyone help me out.

This has got to be a wind up surely?

Regards

Dotty

 

[Optegris]

I was just thinking the same

 

[Fred_the_frog]

I've trying for the best part of an hour to work out what 30% of a hundred is but my calculator seems to be playing up. Typical! Can anyone help me out.

How can your calculator be playing up?

 

[dagr]

I've trying for the best part of an hour to work out what 30% of a hundred is but my calculator seems to be playing up. Typical! Can anyone help me out.

Are you sure it's not the TV remote control you're using?

 

[simon field]

What on earth is going on? :|

Where's the shame?

 

[BizGurl]

Percent means out of a hundred, so 30% of 100 is 30.

If it were a harder number to find 30% of (say 30% of 270) I'd start by finding 10% by dividing 270 by 10.

so 10% of 270 = 27

and 30% is 10% x 3 so 27 x 3 = 81.

Therefore 30% of 270 is 81.

The percentage button on a calculator is pants, is it finding a percentage of or turning a number into a percentage? the scope for confusion is immense - I tell my pupils to never use it. Easier to convert the percentage to a decimal (by dividing by 100) and work from there.

Believe it or not, I even written a couple of blog posts on percentages! ( here and here)

Sorry - I've waffled a bit! To re-iterate, the answer to your question is 30.

J

Erm....Thank you

 

[BizGurl]

Sadly I have an app that does percentages.Very good it is to.

That's too bad mate.

 

[BizGurl]

This has got to be a wind up surely?

Regards

Dotty

What on earth gave you that impression? We can't all be clever

 

[BizGurl]

How can your calculator be playing up?

It must be...I can do basic maths and I'll put in like 2 + 2 and it'll give me 5

 

[BizGurl]

Are you sure it's not the TV remote control you're using?

My lord I might be dim but I can tell the difference between a TV remote and a cowculator

 

[legorn]

Are you sure it's not the TV remote control you're using?

Hahahahahah

 

[Lesdyxic]

I thought it was a wind-up too, until I remebered that chick from Celebrity Big Brother who did not know what 20% of 100 was, when Julian Clary and Julie Badyear asked her.

She said 5, and she wasn't joking.

 

[Root 66 Woodshop]

If there was ever a Classic Gold area on these forums - This thread would certainly make it.

Thank you Bizgurl for making my morning.

 

[jonrod]

Were you absent during that time when your teacher discussed "percents" to the class?

 

[BizGurl]

Were you absent during that time when your teacher discussed "percents" to the class?

If you haven't yet worked out that the thread was a wind up, then dude...

Oh, maths was one of my strongest subjects

 

[Root 66 Woodshop]

I'm certainly glad it was a wind up... considering you're in Finance.