Maths Problem - Can you figure it out?

[VapingBad]

May 26, 2016 19:38:52 GMT calnorth said:

From BODMAS its -1 ...innit?

9-3div1/3+1 aka a crap expression!

Div.... (3div1/3) = (3*3/1) = 9 or 9 thirds in numeral 3
Add... (9+1)
Sub... (9-10) = (9-(+10)) which is (+9 -10) = -1 (negative priority)

No it's 1 as mikedidthis showed in post 10

you don't need the brackets for subtraction and addition, the middle term in not a multiplier for the 1

[Bob]

The answer is deffo 1

3 div 1/3 = 3 / (1 / 3) = 9

therefore 9 - 9 + 1 = 1

exactly as Mike said - confused me at first

[gary101]

I used to teach maths until recently and the issue here as was said above, is bodmas.
The order od precedence of maths operators is anything in brackets, followed by any multiplications, the divisions, then subtractions than additions.
Therefore the 3 gets divided by the1/3 first=1,then the 9 -1 =8, finally add the other 1 =9

[Bob]

May 26, 2016 20:16:16 GMT gary101 said:

I used to teach maths until recently and the issue here as was said above, is bodmas.
The order od precedence of maths operators is anything in brackets, followed by any multiplications, the divisions, then subtractions than additions.
Therefore the 3 gets divided by the1/3 first=1,then the 9 -1 =8, finally add the other 1 =9

But 3 div 1/3 is not 1 it is 9 (1/3 = 0.3333 decimal and 3 div 0.3333 = 9)

[jtc]

I think the answer is 3

[calnorth]

May 26, 2016 19:50:20 GMT VapingBad said:

May 26, 2016 19:38:52 GMT calnorth said:

From BODMAS its -1 ...innit?

9-3div1/3+1 aka a crap expression!

Div.... (3div1/3) = (3*3/1) = 9 or 9 thirds in numeral 3
Add... (9+1)
Sub... (9-10) = (9-(+10)) which is (+9 -10) = -1 (negative priority)

No it's 1 as mikedidthis showed in post 10

you don't need the brackets for subtraction and addition, the middle term in not a multiplier for the 1

You'd better explain because those using their calculators are wondering.  the 9 minus 10 bit

[erik514]

BODMAS
No brackets so divide first. 3 divided by 1/3. Turn the fraction upside down and multiply. 3 x 3 = 9
9 - 9 + 1 = 1

[mikedidthis]

I think we all need either 1, 3 or 9 beers before we try another one.

[VapingBad]

May 26, 2016 20:25:25 GMT calnorth said:

May 26, 2016 19:50:20 GMT VapingBad said:

No it's 1 as mikedidthis showed in post 10

you don't need the brackets for subtraction and addition, the middle term in not a multiplier for the 1

You'd better explain because those using their calculators are wondering.  the 9 minus 10 bit

Your sub line is totally wrong.

I thought it was clear, but maybe this will help.

[Bobsbeer]

He he. I must admit I got it wrong at first as I forgot about the order. To put everyone out of their misery. The answer is 1.

You have to remember the order or priority of mathematical equations. something I haven't had to do for many a year, so in line with most of the others I also got it wrong.

[gary101]

@bobw Very true, it's been a very long day!

[Bobsbeer]

and the winner is :drum roll: Postmodern Smoking Well done. It certainly got my little grey cells working even though I got it wrong.

[VapingBad]

First I've heard of BODMAS, but I have understood it for as long as I can remember, maybe they didn't us it in the 70s and 80s.

[Postmodern Smoking]

May 26, 2016 20:47:20 GMT Bobsbeer said:

and the winner is :drum roll: Postmodern Smoking Well done. It certainly got my little grey cells working even though I got it wrong.

mikedidthis got it before me (I edited my post after a meal and re-read) .... well done Mike

[erik514]

Yep we got BODMAS in the early 80s. Then I got it again when I studied a bit more in the 90s.