URGENT L7 MATHS HELP

[urbancupcake]

Question: covert the percentages into a decimal multiplier?

Have googled to death and can't find a formula.

for example 23%

Please help!

.23

whatever number you multiply by .23, fthe answer is 23% of the original number.

isn't it 0.23?

as in, you multiply something by 0.23 and it is the same as taking 23% of that thing?

so you put the percentage over 100, in that 0.23 is 23/100.

I don't actually know what it is but would presume 23% was 0.23?

Having googled there was also something about increasing a number by say 15% where the decimal multiplier to do that would be 1.15

Thanks guys, but some of the questions my little un says are over 100, such as 376% does the same rule apply?

376% would be 3.76

100% is the whole of something so is the equivalent of 1. 200% would be 2 etc.

Miranda, you're a superstar!!!! He thinks he may have cracked it, but hasn't got to that question yet. Will see if it matches yours. Is there a particular formula he should be using or should what you've written be enough for him to get it?

You may have gathered I am awful at Maths.

Love you guys

@Miranda - he just read what you've written and said ooooooohhhhhhh - I get it.

Thanks so very, very much.

I owe you.

I'm glad it makes sense to him :)

That's a poorly set question though, because it isn't really about a formula as such. No wonder he was confused.

Oh really @pointy? That's interesting to know. He's a really hard worker and by no means daft either (yr 8 - currently working to level 7 in most topics). He was determined to crack it and you can see what time we went to bed! We were on it for hours looking for a formula and every book we checked at home, of which there are many, and every single website just didn't have one which covered sums over 100%. And I just kept saying to him that surely the formula for the lower numbers should apply to the higher one's also? If there's no formula, no blinkin wonder we couldn't find anything. We checked, CGP, Kahn academy, maths frameworking, to name but a few and googled every variation under the sun.

I found something that said something about moving the decimal point across, but he rightly said what's the point in just doing that if you don't understand why you're doing it, where @Miranda's explanation eventually did just that.

There was absolutely no way in hell I thought we were going to get an answer that late at night from mumsnet and was astonished by the number of folk who came on board to rescue us. He wouldn't have gone to bed otherwise.

I'll tell him what you said in the morning and so thanks so much for letting us know.

Miranda, Miss Cromwell would be proud of you

Excellent work Miranda.