Maths for dummies

[Pigeon_Droppings2]

What's to argue?

Sambod would be proud I think

 

[Barking Mat]

Just depends where you choose to put brackets.

But no brackets.

Type it into a calculator.

'nuff said. Over.

 

[mtt.tr]

I never understood why they didn't teach brackets right from the beginning in school...and also everyone uses "/" for divide so why don't they just teach that too!

15 + (4 * 5) ....a lot clearer to me!

And "." to show multiplication

 

[pedrobedro]

15+5x4=80

 

[Barking Mat]

Where's that 'unwatch thread' function / button ?

 

[tom2207]

I never understood why they didn't teach brackets right from the beginning in school...and also everyone uses "/" for divide so why don't they just teach that too!

15 + (4 * 5) ....a lot clearer to me!

its just not quite as '' fruity ''.

 

[Barking Mat]

Go on @Seadog explain.. Seems straightforward, ahhh, why am I still here?

 

[mr haynes]

the last + isnt a +

It is a drunk +

 

[jerrytug]

35

 

[mcostello]

I missed Algebra, why can not the problem be solved as written? Why is there an Order of Operations?

 

[Migmac]

35

 

[Burdekin]

And the same grumpy old men bag the kids of today.

 

[julianf]

Type it into a calculator.

'nuff said. Over.

If you put the equation, as written, with no brackets, into a proper scientific calculator, you will get the correct answer (35)

If you put parts of it into a simpler calculator, individually, into a linear fashion, you will get the wrong answer.

If you try typing the sum into Google as a whole, Google will apply brackets according to BIDMAS and then give you the correct answer.

There is no choice about where the brackets are added. It's rule based.

Google Search

 

[Barking Mat]

If you put the equation, as written, with no brackets, into a proper scientific calculator, you will get the correct answer (35)

If you put parts of it into a simpler calculator, individually, into a linear fashion, you will get the wrong answer.

If you try typing the sum into Google as a whole, Google will apply brackets according to BIDMAS and then give you the correct answer.

There is no choice about where the brackets are added. It's rule based.

Google Search

Damn it, I typed that in and got 35, but in my head, it's 80.

 

[Pigeon_Droppings2]

I missed Algebra, why can not the problem be solved as written? Why is there an Order of Operations?

It's just a convention that prevents people getting different answers to the same question...using a different order isn't "wrong" it's just not following the standard convention that everyone has agreed so the answer isn't the same.

Maths and science is founded on standards and conventions...before that we were using sticks and rocks to measure stuff....and when we weren't using them to measure we were beating each other over the head with them.

 

[pedrobedro]

Damn it, I typed that in and got 35, but in my head, it's 80.

Mine too and it always will be If you want brackets you put brackets in.

The real answer is

 

[Pigeon_Droppings2]

Mathematicians generally put in the brackets anyway to avoid confusion (even where they aren't strictly necessary)...I know I do.

 

[ukracer]

Others are saying 35

Did they say why? I say 80 which is not good for you as I often get these type of things wrong. Lol

 

[Pigeon_Droppings2]

The real answer is

Very good....knowledge vs wisdom

 

[cheb]

The answer 35 assumes that one cherry is half the value of two cherries.