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8/2 (2+2)= ?
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By (user no longer on site) OP
over a year ago
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"I thought you worked from left to right
I did 2+2 and then 2 x 4 and then 8/8 "
2x4 because the 4 is still in the bracket. It’s just the sum of the bracket. |
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By (user no longer on site)
over a year ago
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BODMAS: acronym to help remember the correct order in which to solve maths problems. Bodmas stands for:
B-Brackets
O-Orders (powers/indices or roots)
D-Division
M-Multiplication
A-Addition
S-Subtraction |
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By *ad NannaWoman
over a year ago
East London |
"I thought you worked from left to right
I did 2+2 and then 2 x 4 and then 8/8
8/2=4 (2+2)=4 4x4 = 16
I'm not a mathematician by any stretch of anyone's fevered imagination though"
Even mathematicians argue over which order to do them in.
I forgot division was before multiply.
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By *ad NannaWoman
over a year ago
East London |
"I thought you worked from left to right
I did 2+2 and then 2 x 4 and then 8/8
8/2=4 (2+2)=4 4x4 = 16
I'm not a mathematician by any stretch of anyone's fevered imagination though
Even mathematicians argue over which order to do them in.
I forgot division was before multiply.
"
So it is 16, Steve. |
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"I thought you worked from left to right
I was taught the old mnemonic BODMAS.In this order:-
1. brackets
2. Order of powers or roots
3. divide
4. multiply
5. add
6. subtract."
So should it be (2+2)=4 8/2=4 ? |
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By (user no longer on site) OP
over a year ago
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"I thought you worked from left to right
I did 2+2 and then 2 x 4 and then 8/8
8/2=4 (2+2)=4 4x4 = 16
I'm not a mathematician by any stretch of anyone's fevered imagination though
Even mathematicians argue over which order to do them in.
I forgot division was before multiply.
So it is 16, Steve."
Yeah I watched two videos on it.
Basically I’m doing it as 8/(2(2+2)) because that’s how I was taught. It’s long but Google says 16. Some calculators say 1. Some mathematicians say 16 some say 1. |
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By (user no longer on site) OP
over a year ago
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"I thought you worked from left to right
I did 2+2 and then 2 x 4 and then 8/8
8/2=4 (2+2)=4 4x4 = 16
I'm not a mathematician by any stretch of anyone's fevered imagination though
Even mathematicians argue over which order to do them in.
I forgot division was before multiply.
So it is 16, Steve.
Yeah I watched two videos on it.
Basically I’m doing it as 8/(2(2+2)) because that’s how I was taught. It’s long but Google says 16. Some calculators say 1. Some mathematicians say 16 some say 1. "
To get 16 it’s (8/2) (2+2) which = 16. |
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By (user no longer on site) OP
over a year ago
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"Look guys, I only got a B in my maths GCSE. 
That's a good grade 
A fluke apparently 
If it's any consolation I can't use a slide rule"
No idea what you just said  |
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"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said "
I don't think they're a thing any more |
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"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said "
Like an ancient scientific calculator, but without the buttons  |
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By (user no longer on site) OP
over a year ago
|
"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said
Like an ancient scientific calculator, but without the buttons "
Lol this is even more confusing?   |
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By (user no longer on site) OP
over a year ago
|
"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said
I don't think they're a thing any more"
Ah yeah I forgot I’m like super young |
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"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said
Like an ancient scientific calculator, but without the buttons
Lol this is even more confusing? "
They were on the list of things I had to have when I went to grammar school, along with a tennis racquet and hockey stick, protractor, set square and a very attractive navy blue science overall |
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"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said
I don't think they're a thing any more
Ah yeah I forgot I’m like super young "
And I'm super old |
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By (user no longer on site)
over a year ago
|
"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said
I don't think they're a thing any more
Ah yeah I forgot I’m like super young "
And you sit on somebody else's bench! The youth of today!  |
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By (user no longer on site) OP
over a year ago
|
"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said
I don't think they're a thing any more
Ah yeah I forgot I’m like super young
And I'm super old"
I know. A perfect match. |
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By (user no longer on site) OP
over a year ago
|
"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said
I don't think they're a thing any more
Ah yeah I forgot I’m like super young
And you sit on somebody else's bench! The youth of today! "
Gen Z are all wrongens. No respect for anyone else!! |
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By (user no longer on site)
over a year ago
|
"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said
I don't think they're a thing any more
Ah yeah I forgot I’m like super young
And you sit on somebody else's bench! The youth of today!
Gen Z are all wrongens. No respect for anyone else!! "
Even worse than the pesky millennials! |
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"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said
Like an ancient scientific calculator, but without the buttons
Lol this is even more confusing?
They were on the list of things I had to have when I went to grammar school, along with a tennis racquet and hockey stick, protractor, set square and a very attractive navy blue science overall"
We needed a hockey stick, a tennis racquet was advised and we needed the protractor and set square. But not the slide rule. We did need aprons for art/pottery and food tech and also for design and technology. Not for science (we just rolled up our sleeves and tucked our ties in ) |
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By (user no longer on site) OP
over a year ago
|
"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said
I don't think they're a thing any more
Ah yeah I forgot I’m like super young
And you sit on somebody else's bench! The youth of today!
Gen Z are all wrongens. No respect for anyone else!!
Even worse than the pesky millennials! "
Millennials would definitely sit somewhere they’re not supposed to as well. They’re just as bad |
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By (user no longer on site)
over a year ago
|
"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said
I don't think they're a thing any more
Ah yeah I forgot I’m like super young
And you sit on somebody else's bench! The youth of today!
Gen Z are all wrongens. No respect for anyone else!!
Even worse than the pesky millennials!
Millennials would definitely sit somewhere they’re not supposed to as well. They’re just as bad "
|
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"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said
Like an ancient scientific calculator, but without the buttons
Lol this is even more confusing?
They were on the list of things I had to have when I went to grammar school, along with a tennis racquet and hockey stick, protractor, set square and a very attractive navy blue science overall
We needed a hockey stick, a tennis racquet was advised and we needed the protractor and set square. But not the slide rule. We did need aprons for art/pottery and food tech and also for design and technology. Not for science (we just rolled up our sleeves and tucked our ties in )"
I'm reminiscing now. My school was so old-fashioned even in those days, I feel quite nostalgic |
Reply privately, Reply in forum +quote
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"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said
Like an ancient scientific calculator, but without the buttons
Lol this is even more confusing?
They were on the list of things I had to have when I went to grammar school, along with a tennis racquet and hockey stick, protractor, set square and a very attractive navy blue science overall
We needed a hockey stick, a tennis racquet was advised and we needed the protractor and set square. But not the slide rule. We did need aprons for art/pottery and food tech and also for design and technology. Not for science (we just rolled up our sleeves and tucked our ties in )
I'm reminiscing now. My school was so old-fashioned even in those days, I feel quite nostalgic "
Ours was pretty old fashioned too, for the late 90s. Bloody gym knickers and super short pleated gym skirts too  |
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"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said
Like an ancient scientific calculator, but without the buttons
Lol this is even more confusing?
They were on the list of things I had to have when I went to grammar school, along with a tennis racquet and hockey stick, protractor, set square and a very attractive navy blue science overall
We needed a hockey stick, a tennis racquet was advised and we needed the protractor and set square. But not the slide rule. We did need aprons for art/pottery and food tech and also for design and technology. Not for science (we just rolled up our sleeves and tucked our ties in )
I'm reminiscing now. My school was so old-fashioned even in those days, I feel quite nostalgic
Ours was pretty old fashioned too, for the late 90s. Bloody gym knickers and super short pleated gym skirts too "
The ridiculous rules too. No eating in the street while in school uniform. Hats on for the entire journey to and from school, anyone caught without had to wear it all day in school next day, even in gym |
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With typed layout all in one line, using the fab forum titles font, it is pretty well impossible to determine the correct parsing of the expression as intended by the writer.
Rewriting it as 8/2*(2+2) does have a unique parsing in the C computer language, but is still unclear to anyone that has not memorised the order of precedence for operators as detailed in the C99 specification (earlier or later specification issues are also available).
If a programmer working for me had written this line, without an accompanying comment explaining precisely what the intention was, I would give him grief during a code review. I often deal with pieces of code that have to be maintained for 20+ years, and trying to understand what someone long departed the company actually meant to write costs time and money. If it is not perfectly clear how the equation is intended to be parsed, extra brackets should be added to make it perfectly clear.
The given sum should thus be written either as:
(8/2)*(2+2) = (4)*(4) = 16
or as:
8/(2*(2+2)) = 8/(2*4) = 8/8 = 1
If the section of code was within the software for a safety critical system, eg. aircraft control, life support equipment, vehicle engine management, nuclear missile guidance, it would be a bit late after the event to say "oops, I thought the computer would know how I meant that expression to be processed". |
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"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
No idea what you just said
Like an ancient scientific calculator, but without the buttons
Lol this is even more confusing?
They were on the list of things I had to have when I went to grammar school, along with a tennis racquet and hockey stick, protractor, set square and a very attractive navy blue science overall
We needed a hockey stick, a tennis racquet was advised and we needed the protractor and set square. But not the slide rule. We did need aprons for art/pottery and food tech and also for design and technology. Not for science (we just rolled up our sleeves and tucked our ties in )
I'm reminiscing now. My school was so old-fashioned even in those days, I feel quite nostalgic
Ours was pretty old fashioned too, for the late 90s. Bloody gym knickers and super short pleated gym skirts too
The ridiculous rules too. No eating in the street while in school uniform. Hats on for the entire journey to and from school, anyone caught without had to wear it all day in school next day, even in gym "
Bags carried below shoulder level (even backpacks, not allowed to be worn on the back!)
Not allowed to go down the middle stairs unless you were in the 5th or 6th form.
Socks could only be white, black or bottle green
No dark soled gym shoes indoors
Everyone needed a specific Bible edition |
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"With typed layout all in one line, using the fab forum titles font, it is pretty well impossible to determine the correct parsing of the expression as intended by the writer.
Rewriting it as 8/2*(2+2) does have a unique parsing in the C computer language, but is still unclear to anyone that has not memorised the order of precedence for operators as detailed in the C99 specification (earlier or later specification issues are also available).
If a programmer working for me had written this line, without an accompanying comment explaining precisely what the intention was, I would give him grief during a code review. I often deal with pieces of code that have to be maintained for 20+ years, and trying to understand what someone long departed the company actually meant to write costs time and money. If it is not perfectly clear how the equation is intended to be parsed, extra brackets should be added to make it perfectly clear.
The given sum should thus be written either as:
(8/2)*(2+2) = (4)*(4) = 16
or as:
8/(2*(2+2)) = 8/(2*4) = 8/8 = 1
If the section of code was within the software for a safety critical system, eg. aircraft control, life support equipment, vehicle engine management, nuclear missile guidance, it would be a bit late after the event to say "oops, I thought the computer would know how I meant that expression to be processed"."
Surely, in the absence of the additional set of brackets, there is an implied multiplication sign where a number proceeds a bracket? |
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"With typed layout all in one line, using the fab forum titles font, it is pretty well impossible to determine the correct parsing of the expression as intended by the writer.
Rewriting it as 8/2*(2+2) does have a unique parsing in the C computer language, but is still unclear to anyone that has not memorised the order of precedence for operators as detailed in the C99 specification (earlier or later specification issues are also available).
If a programmer working for me had written this line, without an accompanying comment explaining precisely what the intention was, I would give him grief during a code review. I often deal with pieces of code that have to be maintained for 20+ years, and trying to understand what someone long departed the company actually meant to write costs time and money. If it is not perfectly clear how the equation is intended to be parsed, extra brackets should be added to make it perfectly clear.
The given sum should thus be written either as:
(8/2)*(2+2) = (4)*(4) = 16
or as:
8/(2*(2+2)) = 8/(2*4) = 8/8 = 1
If the section of code was within the software for a safety critical system, eg. aircraft control, life support equipment, vehicle engine management, nuclear missile guidance, it would be a bit late after the event to say "oops, I thought the computer would know how I meant that expression to be processed".
Surely, in the absence of the additional set of brackets, there is an implied multiplication sign where a number proceeds a bracket?"
Implied yes. But if it might make the difference between an airplane climbing upwards or diving vertically, it really isn't a good idea to rely on "implied".
A few years ago there was a billion dollar probe sent to Mars. The american software engineers assumed that it was implied that a particular number was a speed in miles per hour. The european software engineers assumed that it was implied the number was a speed in metres per second. Instead of the probe making the desired approach to the surface and landing gently, it smacked into the ground at approximately one thousand miles an hour... A billion dollars, twenty years in the making, the life work of hundreds of people - nothing but a crater in the sand remaining because of "implied"... |
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"With typed layout all in one line, using the fab forum titles font, it is pretty well impossible to determine the correct parsing of the expression as intended by the writer.
Rewriting it as 8/2*(2+2) does have a unique parsing in the C computer language, but is still unclear to anyone that has not memorised the order of precedence for operators as detailed in the C99 specification (earlier or later specification issues are also available).
If a programmer working for me had written this line, without an accompanying comment explaining precisely what the intention was, I would give him grief during a code review. I often deal with pieces of code that have to be maintained for 20+ years, and trying to understand what someone long departed the company actually meant to write costs time and money. If it is not perfectly clear how the equation is intended to be parsed, extra brackets should be added to make it perfectly clear.
The given sum should thus be written either as:
(8/2)*(2+2) = (4)*(4) = 16
or as:
8/(2*(2+2)) = 8/(2*4) = 8/8 = 1
If the section of code was within the software for a safety critical system, eg. aircraft control, life support equipment, vehicle engine management, nuclear missile guidance, it would be a bit late after the event to say "oops, I thought the computer would know how I meant that expression to be processed".
Surely, in the absence of the additional set of brackets, there is an implied multiplication sign where a number proceeds a bracket?
Implied yes. But if it might make the difference between an airplane climbing upwards or diving vertically, it really isn't a good idea to rely on "implied".
A few years ago there was a billion dollar probe sent to Mars. The american software engineers assumed that it was implied that a particular number was a speed in miles per hour. The european software engineers assumed that it was implied the number was a speed in metres per second. Instead of the probe making the desired approach to the surface and landing gently, it smacked into the ground at approximately one thousand miles an hour... A billion dollars, twenty years in the making, the life work of hundreds of people - nothing but a crater in the sand remaining because of "implied"..."
Being picky but that's an incorrect assumption rather than an implication |
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By (user no longer on site)
over a year ago
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These questions invariably rely on poorly written equations relying on standard keyboard input rather than the tyoe of display dedicated maths software would give. Whether it's 1 or 16 depends entirely on whether you view the bracketed equation as being written as part of the denominator or not.
In any maths test, this would be visually obvious from the positioning of the numbers.
Given it is ambiguous it could be either 1 or 16. Personally I feel the bracketed expression is written on the same line as the fraction meaning it isn't part of the denominator therefore the result is 16.
Mr |
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As a child of a crappy school I have no recollection of bodmas it was alway from l-r , I picked this whole bodmas stuff up later in life. So to me it's all bollocks with people trying to show how clever they are.  |
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By (user no longer on site)
over a year ago
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"As a child of a crappy school I have no recollection of bodmas it was alway from l-r , I picked this whole bodmas stuff up later in life. So to me it's all bollocks with people trying to show how clever they are. "
this exept i never went to school  |
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By (user no longer on site)
over a year ago
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Some people got 16 as the answer, and some people got 1. The confusion has to do with the difference between modern and historic interpretations of the order of operations. The correct answer today is 16. An answer of 1 would have been correct 100 years ago. |
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"I thought you worked from left to right
I did 2+2 and then 2 x 4 and then 8/8
8/2=4 (2+2)=4 4x4 = 16
I'm not a mathematician by any stretch of anyone's fevered imagination though
Even mathematicians argue over which order to do them in.
I forgot division was before multiply.
So it is 16, Steve.
Yeah I watched two videos on it.
Basically I’m doing it as 8/(2(2+2)) because that’s how I was taught. It’s long but Google says 16. Some calculators say 1. Some mathematicians say 16 some say 1. "
Why would it be that when the 2 elements are clearly separate? You added additional brackets. |
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"It's ambiguous. It doesn't say whether it is
(8/2) x (2+2) (which equals 16)
or
8/(2(2+2)) (which equals 1)
It's a badly-worded question.
Why would you add brackets?"
I'm adding brackets in both cases to show two ways it could be read. If this was a serious question, a second pair of brackets would have been put in. |
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"I thought you worked from left to right
I did 2+2 and then 2 x 4 and then 8/8
8/2=4 (2+2)=4 4x4 = 16
I'm not a mathematician by any stretch of anyone's fevered imagination though
Even mathematicians argue over which order to do them in.
I forgot division was before multiply.
So it is 16, Steve.
Yeah I watched two videos on it.
Basically I’m doing it as 8/(2(2+2)) because that’s how I was taught. It’s long but Google says 16. Some calculators say 1. Some mathematicians say 16 some say 1.
Why would it be that when the 2 elements are clearly separate? You added additional brackets. "
Yes, but "clearly separate" is not a defined term in maths. The S in BODMAS stands for subtraction, not separated. |
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"It's ambiguous. It doesn't say whether it is
(8/2) x (2+2) (which equals 16)
or
8/(2(2+2)) (which equals 1)
It's a badly-worded question. "
It's numeric rather than worded.
It's very clear.
Brackets mean do THIS bit first.
There is no confusion in the example given. x |
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"It's ambiguous. It doesn't say whether it is
(8/2) x (2+2) (which equals 16)
or
8/(2(2+2)) (which equals 1)
It's a badly-worded question.
Why would you add brackets?
I'm adding brackets in both cases to show two ways it could be read. If this was a serious question, a second pair of brackets would have been put in. "
It WAS a serious Q  Before someone changed the rules and added brackets willy nilly.... |
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By (user no longer on site) OP
over a year ago
|
One thing I’ve learned about maths in the last day is that there’s more than one way of doing it. Maths, like anything has changed over time. Perhaps silly of me but I assumed that it’s been the same since it was done in Egypt or wherever thousands of years ago.
It’s more interesting than I’ve given it credit for in the past |
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"Some people got 16 as the answer, and some people got 1. The confusion has to do with the difference between modern and historic interpretations of the order of operations. The correct answer today is 16. An answer of 1 would have been correct 100 years ago."
Oh really ?
Under what rules? According to whom ?
News to me. Unless you mean the mnemonic was put into use to help people remember the order but the MATHS is not new. |
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It’s 16, all day, every day.
Those making it 1, have decided to rewrite the question.
In the form it was originally presented by the OP, it can only ever be 16. (Disclaimer, I only achieved a C at O level) |
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"One thing I’ve learned about maths in the last day is that there’s more than one way of doing it. Maths, like anything has changed over time. Perhaps silly of me but I assumed that it’s been the same since it was done in Egypt or wherever thousands of years ago.
It’s more interesting than I’ve given it credit for in the past "
The maths stays the same. People's methods of solving change as they come up with new/easier ways etc ..... the MATHS doesn't change. |
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By (user no longer on site) OP
over a year ago
|
"One thing I’ve learned about maths in the last day is that there’s more than one way of doing it. Maths, like anything has changed over time. Perhaps silly of me but I assumed that it’s been the same since it was done in Egypt or wherever thousands of years ago.
It’s more interesting than I’ve given it credit for in the past
The maths stays the same. People's methods of solving change as they come up with new/easier ways etc ..... the MATHS doesn't change. "
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"I would say 4 4 there is no sign between 8/2 and (2+2) . Will they need to multiply or what?   "
Solve the bracket.
Then multiply it by whatever is outside the bracket.
The bracket indicates that multiplication will take place IF there is something to multiply it by. |
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By (user no longer on site) OP
over a year ago
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"8/2 (2+2)=
I've finally gone for {[(8) / (2)] x [(2) + (2) ]} = {[(  ])} OR - / + ~~
Just to finally clear things up."
It’s clear you’re the smartest person in this thread.  |
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"I would say 4 4 there is no sign between 8/2 and (2+2) . Will they need to multiply or what?
Solve the bracket.
Then multiply it by whatever is outside the bracket.
The bracket indicates that multiplication will take place IF there is something to multiply it by."
Must also learn to read entire thread |
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"I say I don’t care what the answer is, it’s not gonna supply me with coffee, bacon, or hot chicks, right now.  "
What if a correct answer guaranteed you sex with me? Would you break out the abacus? |
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By *llaandGCouple
over a year ago
London |
There's a whole heap of stuff on this and the answer is that the equation is deliberately imprecise to allow both interpretations. So there is no "wrong" answer.
If the equation is written like this
8
------
2(2+2)
then the whole of the bit below the line is effectively in brackets. And the answer is 1
If it's
8 (2+2)
-
2
Then the (2+2) is no longer below the line and the answer is 16.
So everyone is right. Especially whoever said 42.
G |
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By *llaandGCouple
over a year ago
London |
"I say I don’t care what the answer is, it’s not gonna supply me with coffee, bacon, or hot chicks, right now.
Maths is sexy "
It really is, many a time I've seduced Ella by whispering the Monty Hall problem into her ear.....
G |
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"I say I don’t care what the answer is, it’s not gonna supply me with coffee, bacon, or hot chicks, right now.
Maths is sexy
It really is, many a time I've seduced Ella by whispering the Monty Hall problem into her ear.....
G"
I’d be happy to be switched after you’ve shown me your goat…
or something something something, FAF? |
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By *llaandGCouple
over a year ago
London |
"I say I don’t care what the answer is, it’s not gonna supply me with coffee, bacon, or hot chicks, right now.
Maths is sexy
It really is, many a time I've seduced Ella by whispering the Monty Hall problem into her ear.....
G
I’d be happy to be switched after you’ve shown me your goat…
or something something something, FAF?"
Spot on! |
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By (user no longer on site)
over a year ago
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Bodmas
Brackets
Order of powers or roots
Division
Multiplication
Addition
Subtraction so it’s 2+2 and then 8/2 so then it’s 4(4) which is 4 x 4
It still blows my head when I’m trying to work why it’s this way but hey …..nerds |
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"I would say 4 4 there is no sign between 8/2 and (2+2) . Will they need to multiply or what?
Solve the bracket.
Then multiply it by whatever is outside the bracket.
The bracket indicates that multiplication will take place IF there is something to multiply it by.
Must also learn to read entire thread"
Ermm brackets doesn’t mean that you need to multiply! brackets are a set of marks, like parentheses, that are used to enclose a group of terms and in this case sum of two numbers needs prioritising so whatever sign you put outside & and in front of the bracket whether +,-, x, / effect the end result.
If the question was 8/2x(2+2)=16 if the question was 8/2/(2+2) = 1 or could be 8/2+(2+2) = 8 or 8/2-(2+2)=0 (division and multiplication should be done first if there is no brackets where +,- exist)
I hope that clears it a bit! |
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"There's a whole heap of stuff on this and the answer is that the equation is deliberately imprecise to allow both interpretations. So there is no "wrong" answer.
If the equation is written like this
8
------
2(2+2)
then the whole of the bit below the line is effectively in brackets. And the answer is 1
If it's
8 (2+2)
-
2
Then the (2+2) is no longer below the line and the answer is 16.
So everyone is right. Especially whoever said 42.
G"
(b)(u)(l)(l)(s)(h)(i)(t) |
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"I would say 4 4 there is no sign between 8/2 and (2+2) . Will they need to multiply or what?
Solve the bracket.
Then multiply it by whatever is outside the bracket.
The bracket indicates that multiplication will take place IF there is something to multiply it by.
Must also learn to read entire thread
Ermm brackets doesn’t mean that you need to multiply! brackets are a set of marks, like parentheses, that are used to enclose a group of terms and in this case sum of two numbers needs prioritising so whatever sign you put outside & and in front of the bracket whether +,-, x, / effect the end result.
If the question was 8/2x(2+2)=16 if the question was 8/2/(2+2) = 1 or could be 8/2+(2+2) = 8 or 8/2-(2+2)=0 (division and multiplication should be done first if there is no brackets where +,- exist)
I hope that clears it a bit! "
NO it doesn't.
Where brackets are used , that should be calculated first.
If there is a number before the bracket - the answer to the bracket is multiplied by what ever is outside the bracket.
There is NO need for an x between a number and the bracket.
e.g. 2(3+3) means ... work out the bracket and multiply by 2.
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"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule"
Does anyone, these days, know how to use a slide rule? I used to design buildings with one. My daughter took one to school years ago on a show and tell. Even the teacher thought it was magic! |
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"Look guys, I only got a B in my maths GCSE.
That's a good grade
A fluke apparently
If it's any consolation I can't use a slide rule
Does anyone, these days, know how to use a slide rule? I used to design buildings with one. My daughter took one to school years ago on a show and tell. Even the teacher thought it was magic! "
I used my dad's log books.... logarithms..... bliss. |
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"There's a whole heap of stuff on this and the answer is that the equation is deliberately imprecise to allow both interpretations. So there is no "wrong" answer.
If the equation is written like this
8
------
2(2+2)
then the whole of the bit below the line is effectively in brackets. And the answer is 1
If it's
8 (2+2)
-
2
Then the (2+2) is no longer below the line and the answer is 16.
So everyone is right. Especially whoever said 42.
G
(b)(u)(l)(l)(s)(h)(i)(t)"
^^^Granny knows |
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By (user no longer on site)
over a year ago
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"I say I don’t care what the answer is, it’s not gonna supply me with coffee, bacon, or hot chicks, right now.
What if a correct answer guaranteed you sex with me? Would you break out the abacus? "
The answer is a number.
Factually correct.
So, about this guaranteed sex thing………… |
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By *llaandGCouple
over a year ago
London |
""Answer me this ....
22*2/11+5-6"
Do you mean
22 * 2 + 5 - 6
------
11
Or
22 * 2
------
11+5-6
Or
22 * 2 -6
-----
11+ 5
Or something else? Please clarify
G"
(Ps forum formatting is not my friend....) |
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