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wots this maths sum on facebook
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By (user no longer on site)
over a year ago
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It's to do with the order that the operators (+,-,x,/) should be applied.
In a sum like that, first you calculate anything in brackets. Then you do any exponents (such as squares, or roots). Next you do any divisions, then multiplications, then additions, then subtractions.
So, for 6-1x0+2/2 = ??
Division first 2/2 = 1
Then multiplication 1x0 = 0
So the sum becomes
6-0+1 = 7 |
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By (user no longer on site)
over a year ago
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Calculating the sum from left to right would give 1 as the result, but it's wrong because of the rules I described above, with certain operations always being carried out before others.
The way to remember the correct order which is taught in schools is usually either BODMAS or BEDMAS
Brackets
Exponents or Orders
Division
Multiplication
Addition
Subtraction |
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By (user no longer on site)
over a year ago
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"1
6-1 = 5
5 x 0 = 0
0 + 2 = 2
2 / 2 = 1
And if I'm wrong I'm going back to school 
Back to School you go then! "
I heard this on the radio on the way home and came up with '1'. Simon Mayo said it was wrong. Just did the sum on my calculator and again the answer is '1'  |
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By *b430Man
over a year ago
Tayside |
"1
6-1 = 5
5 x 0 = 0
0 + 2 = 2
2 / 2 = 1
And if I'm wrong I'm going back to school
Back to School you go then!
I heard this on the radio on the way home and came up with '1'. Simon Mayo said it was wrong. Just did the sum on my calculator and again the answer is '1' "
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5/0 on a normal calculator will return an error |
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By *njamesMan
over a year ago
Swindon |
6-1x0+2/2=7
Order of operations requires that multiplication and division be performed first.
6-(1x0)+(2/2)=7
I've added parenthesis to make the math a bit clearer.
6-(0)+(1)=7
And Voila, the answer is 7. |
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By (user no longer on site)
over a year ago
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"1
6-1 = 5
5 x 0 = 0
0 + 2 = 2
2 / 2 = 1
And if I'm wrong I'm going back to school
Back to School you go then!
I heard this on the radio on the way home and came up with '1'. Simon Mayo said it was wrong. Just did the sum on my calculator and again the answer is '1' "
i suspect that's because you enter each operation linearly as you read it from the expression.... which does not take into account the order of precendence rules above....
.. .is that yawning I can hear from the back of the class.... see me after the lesson!
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By (user no longer on site)
over a year ago
|
"1
6-1 = 5
5 x 0 = 0
0 + 2 = 2
2 / 2 = 1
And if I'm wrong I'm going back to school
Back to School you go then!
I heard this on the radio on the way home and came up with '1'. Simon Mayo said it was wrong. Just did the sum on my calculator and again the answer is '1'
Get a new calculator
5/0 on a normal calculator will return an error "
The sum contains 5 x 0, which is 0, not 5/0.
5/0 is infinity, which is why an error is returned. |
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By (user no longer on site)
over a year ago
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"Calculating the sum from left to right would give 1 as the result, but it's wrong because of the rules I described above, with certain operations always being carried out before others.
The way to remember the correct order which is taught in schools is usually either BODMAS or BEDMAS
Brackets
Exponents or Orders
Division
Multiplication
Addition
Subtraction"
This, although must admit, I'd forgotten the order of them  |
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By (user no longer on site)
over a year ago
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"I took it to be 5 being
6 - 1 x (0 + 2) / 2. 6 - 1 = 5 times 2 (0+2) then divided by 2..... but im not a mathematician so......"
Sorry, it's 7. As explained above. |
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