What's the answer to this one ?
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What's the answer to this one ?
18 - (9-5) x 3 = ?
To my mind there should be another set of brackets either round the 18 and the ) or the ( and the 3 - otherwise there are two possible answers surely ?
Thoughts ?
To my mind there should be another set of brackets either round the 18 and the ) or the ( and the 3 - otherwise there are two possible answers surely ?
Thoughts ?
Re: What's the answer to this one ?
I think you would need to use the BODMAS operation for this (Brackets,Of,Division,Multiplication,Addition, Subtraction).
It has be be done in that order to get the right answer. Stand to be corrected if I am wrong
It has be be done in that order to get the right answer. Stand to be corrected if I am wrong
Re: What's the answer to this one ?
I'd have expected BIDMAS to apply, so brackets, then multiplication and finally subtraction.
Re: What's the answer to this one ?
Oh ok, so there are rules then ?
Well that does make sense, brackets first is 4, then multiplication making it 12, then subtraction from 18 gives the supposed right answer of 6.
Better make sure my son knows this for the future !
Thanks both
Well that does make sense, brackets first is 4, then multiplication making it 12, then subtraction from 18 gives the supposed right answer of 6.
Better make sure my son knows this for the future !
Thanks both
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Re: What's the answer to this one ?
Ask him if he's heard of Bidmas or bodmas, I was scornfully told "Of course mum, I'm not stupid!" Some time ago. But I had never heard of it myself.
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Re: What's the answer to this one ?
I remember being taught "Bless my dear Aunt Sally" ... does that work or should the D be before the M?
Re: What's the answer to this one ?
D before M, so
Bless Dear Messy Aunt Sally?
Bless Dad's Miserable Aunt Sally?
Bless Dear Messy Aunt Sally?
Bless Dad's Miserable Aunt Sally?
Re: What's the answer to this one ?
D and M can be in either order as can A and S.
BIDMAS
Brackets
Indices (powers)
Division
Multiplication
Addition
Subtraction
Or across the Atlantic - PEMDAS
Parentheses
Exponents
Mult
Div
Add
Subtract
I like Bless my dear Aunt Sally!
BIDMAS
Brackets
Indices (powers)
Division
Multiplication
Addition
Subtraction
Or across the Atlantic - PEMDAS
Parentheses
Exponents
Mult
Div
Add
Subtract
I like Bless my dear Aunt Sally!
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- Joined: Fri Sep 15, 2006 9:51 am
- Location: The Seaside
Re: What's the answer to this one ?
Oh I am glad that M and D can be either way round!
can stick to the Blessing my dear Aunt Sally.... learnt from an unforgettable maths teacher
can stick to the Blessing my dear Aunt Sally.... learnt from an unforgettable maths teacher