Anyone up for solving this puzzle?

[summeriscomingsoon]

A gold star for a correct answer



@Cowbells

People saying Bidmas/Bodmas has always been taught - how do you account for so many people coming up with answers like 28, 35 and 50? All wrong but all calculated left to right with no brackets.

"Taught" doesn't always equate to "learnt", and "learnt" does not always equate to "remember" especially if it's a skill you've not used since leaving school.

11

70

@Cowbells

People saying Bidmas/Bodmas has always been taught - how do you account for so many people coming up with answers like 28, 35 and 50? All wrong but all calculated left to right with no brackets.

I’ve no idea why people come up with those answers! Not paying attention at school?

I got 11

49

@kleew1

I got 11

I did too, first time. It’s not right. Look closer at the clock.

oh if we're doing bodmas then 19

70?

[quote diddl]I also remember working out sums/products simply from left to right.

www.teachwire.net/news/why-its-time-for-maths-teachers-to-bin-bodmas[/quote]
Well your teacher was teaching you incorrect mathematics.

Also, if you read and understand that article it’s not about binning the (correct) order of operations being used, it’s about binning the use of the acronym as people who don’t understand it properly use it incorrectly.

Proper use is:
Brackets first
Orders/indices/exponents - whatever the fuck you want to call them.
Division AND Multiplication (equal importance)
Addition AND Subtraction (equal importance)

So 3+4x10 requires bodmas - multiplication before addition. 3+40=43
BUT 10-3+2 doesn’t require use of bodmas - add and subtract are of equal importance (they’re mathematical inverses) so in this case you would work from left to right: 10-3=7, 7+2=9

When I teach it or use it in class I write it vertically:

B
O
DM
AS

10

Very cross with myself now..

10

@JustHereWithMyPopcorn - you may have failed to take into account the number of bananas in each bunch, and also there's some skulduggery around the time on the clock-face.

@JustHereWithMyPopcorn

oh if we're doing bodmas then 19

That makes no sense. “If we’re doing bodmas”? You don’t have a choice whether you do or don’t. You have to use bodmas. But that answer is way out.

OK I'm clearly blind my final answer is 10!

OK Ship, calm down, I was being flippant.

Changed to 10

Upvote for @HowManyToes! Good to see a teacher who can set it out clearly and understands the pitfalls. (I'm an ex-maths teacher).

@DadDadDad

We covered bodmas in the year before o-levels, which would have been in the academic year 1972/3

The article above which claims to discredit BODMAS, bases that claim on the premise that adding -2 +4 is 6, rather than +2

Which rather makes the point

haven't read full thread - 35

POSSIBLE SPOILER ALERT FOR ANSWER . . .

(I say possible, because I am a Bear Of Very Little Brain, and could be off the mark)

17 OR 14

Biscuit = 10

Therefore, 'nanas = 2

and whatever-the-hell-that-other-thing-is has to = 3

So on the surface, 17

BUT - does biscuit value depend on the number of chocolate chips . . . ?

In which case, the choc chip is the unit of measurement, not the biscuit, and the answer is 14

sorry no it's 28....

thats what I deduced.... except its 2pm on the clock - 1xbanana each and then x7 (choc chips...) = 28

BODMAS!!!! 14

@Cowbells

People saying Bidmas/Bodmas has always been taught - how do you account for so many people coming up with answers like 28, 35 and 50? All wrong but all calculated left to right with no brackets.

I attribute it to the difference between people being taught and actually learning.

Big difference, huge in fact.