What is 5-5x5+5?

Soldato
Joined
12 Jul 2007
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Location
Stoke/Norfolk
Following BODMAS the answer should be -25 as BODMAS has to be done in that order. However many folks on here are doing BODMSA instead to end up with -15 although there is the claim that you don't have to stick to AS order you just have to go left to right with AS which would mean using either AS or SA :D

Anyway,

5-5x5+5 = ?

5-(5x5)+5 = MULTIPLY FIRST - BODMAS

5-(25+5) = ADDITION SECOND - BODMAS

5-30 = SUBTRACTION LAST - BODMAS

or

5-(5x5)+5 = MULTIPLY FIRST - BODMSA

(5-25)+5 = SUBTRACTION SECOND - BODMSA

-20 + 5 = ADDITION LAST - BODMSA

Giving -25 or -15 but there's a few ways of doing it which will give different answers so, in the end, the real answer is the lessons we learnt on our journey to find the answer! :D
 
Last edited:
Caporegime
Joined
23 Dec 2011
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32,917
Location
Northern England
Following BODMAS the answer should be -25 as BODMAS has to be done in that order, too many folks on here are doing BODMSA instead to end up with -15 although there is the claim that you don't have to stick to AS order you just have to go left to right with AS which would mean using either AS or SA :D

Anyway,

5-5x5+5 = ?

5-(5x5)+5 = MULTIPLY FIRST - BODMAS

5-(25+5) = ADDITION SECOND - BODMAS

5-30 = SUBTRACTION LAST - BODMAS

or

5-(5x5)+5 = MULTIPLY FIRST - BODMSA

(5-25)+5 = SUBTRACTION SECOND - BODMSA

-20 + 5 = ADDITION LAST - BODMSA

Giving -25 or -15 but there's a few ways of doing it which will give different answers so, in the end, the real answer is the lessons we learnt on our journey to find the answer! :D

Yeah...I was a bit stumped reading through but that's what I did!
 
Caporegime
Joined
29 Jan 2008
Posts
58,912
Following BODMAS the answer should be -25 as BODMAS has to be done in that order. However many folks on here are doing BODMSA instead to end up with -15 although there is the claim that you don't have to stick to AS order you just have to go left to right with AS which would mean using either AS or SA :D

KCEQuYu.gif

Y'all need to re-learn some kiddy maths if these confused maths takes are genuine and not just adding to the earlier bad takes for the LOLs:

https://www.bbc.co.uk/bitesize/guides/zsnycdm/revision/1
 
Caporegime
Joined
22 Oct 2002
Posts
26,900
Location
Boston, Lincolnshire
Following BODMAS the answer should be -25 as BODMAS has to be done in that order. However many folks on here are doing BODMSA instead to end up with -15 although there is the claim that you don't have to stick to AS order you just have to go left to right with AS which would mean using either AS or SA :D

Anyway,

5-5x5+5 = ?

5-(5x5)+5 = MULTIPLY FIRST - BODMAS

5-(25+5) = ADDITION SECOND - BODMAS

5-30 = SUBTRACTION LAST - BODMAS

or

5-(5x5)+5 = MULTIPLY FIRST - BODMSA

(5-25)+5 = SUBTRACTION SECOND - BODMSA

-20 + 5 = ADDITION LAST - BODMSA

Giving -25 or -15 but there's a few ways of doing it which will give different answers so, in the end, the real answer is the lessons we learnt on our journey to find the answer! :D

BODMAS still requires you to go from left to right. SOHCAHTOA on the other hand all I remember was the way to remember it "Silly old Hitler couldn't advance his troops over Africa". Can you imagine that being taught in school now as a way to remember something. :p
 
Soldato
Joined
21 Jan 2010
Posts
22,166
BODMAS still requires you to go from left to right. SOHCAHTOA on the other hand all I remember was the way to remember it "Silly old Hitler couldn't advance his troops over Africa". Can you imagine that being taught in school now as a way to remember something. :p
Hitler is still fair game, carry on.
 
Soldato
Joined
17 Aug 2003
Posts
20,158
Location
Woburn Sand Dunes
Following BODMAS the answer should be -25 as BODMAS has to be done in that order. However many folks on here are doing BODMSA instead to end up with -15 although there is the claim that you don't have to stick to AS order you just have to go left to right with AS which would mean using either AS or SA :D

Anyway,

5-5x5+5 = ?

5-(5x5)+5 = MULTIPLY FIRST - BODMAS

5-(25+5) = ADDITION SECOND - BODMAS

5-30 = SUBTRACTION LAST - BODMAS

or

5-(5x5)+5 = MULTIPLY FIRST - BODMSA

(5-25)+5 = SUBTRACTION SECOND - BODMSA

-20 + 5 = ADDITION LAST - BODMSA

Giving -25 or -15 but there's a few ways of doing it which will give different answers so, in the end, the real answer is the lessons we learnt on our journey to find the answer! :D

It's not addition then subtraction, It's addition AND subtraction completing from left to right. The answer is -15.
 
Soldato
Joined
5 Apr 2009
Posts
24,849
Following BODMAS the answer should be -25 as BODMAS has to be done in that order.

This is probably the biggest flaw in the BODMAS mnemonic - it doesn't actually mean you have to do DMAS in that order.

(DM and) AS have equal precedence and should be carried out in the order they appear.

This confuses a lot of people who only vaguely remember it from school.
 
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