The Dumbest mistake u've ever made in a Maths Exam (1 Viewer)

[blue_chameleon]

Probably the dumbest Maths mistake was back in Year 6, when I was doing those Pre Uni "Selective Trial" thingos. From about Question 10, I screwed up, so for Question 10, I was circling question 11, and for Question 11, I was circling Question 12 etc etc. Got quite a shock when I got my results back.

"Pre-Uni".................in "Year 6".

Wow, they really seem to be starting you guys early these days.
Either that, or you're referring to "pre-high school".

 

[Yamiyo]

The mark I lost in my preliminary yearly: 5/3 = 1+1/3 I don't think I'll be forgetting this for a while.

I tend to do this a lot too:
y=x+3
-x+y+3=0

 

[Pimpcess.Snaz]

Same exam:
4 x 10 = 400 (half a mark)

13/3 instead of 4 & 1/3 (half a mark)

i got 59/60 for that exam..

 

[Mark576]

13/3 IS 4 & 1/3 ...? Or is this from some year 6 Maths quiz where you had to express your answer as a mixed numeral?

 

[tanjin]

2+2=8

Is any1 able 2 top that?

Yes.

5-1=1

 

[Pimpcess.Snaz]

13/3 IS 4 & 1/3 ...? Or is this from some year 6 Maths exam where you had to express your answer as a mixed numeral?

yeah its the stupidest thing.. my teachers are extremely strict with their marking... they always want the most simplest form..

 

[dwarven]

hmmm....

"... as x approashes negative infinity y approaches negative 0..."


and

2x=1
x=2

 

[lyounamu]

hmmm....

"... as x approashes negative infinity y approaches negative 0..."


and

2x=1
x=2

Funny thing is: I never make mistake when it comes to difficult questions. However, I make several mistakes when it comes to addition, subtraction, division and multiplication. Next time, I better be careful.

 

[kurt.physics]

Funny thing is: I never make mistake when it comes to difficult questions. However, I make several mistakes when it comes to addition, subtraction, division and multiplication. Next time, I better be careful.

Same, its funny like that.

Also those simultanious equations like x² + 4x + 1 = y & 4y + 2x + 3 = 0, they are easy as its just i fund sometimes i find the x values and forget to calculate the y values.

 

[tii]

i remember doing 3x4=7 once

but on my last assessment, i said that the range of a function was: 0 < x < 2
and right after i had just written the domain as well
and it was correct numbers and signs....

I WANTED TO DIE

 

[m&ss2008]

expressing an answer to 2 decimal places.

all the correct working for half a page

=3.41522...

=52 (2d.p)

wtf?!

 

[MathsIsWeird]

My dumbest mistake was showing up to the exam LOL.

 

[Aerath]

"Pre-Uni".................in "Year 6".

Wow, they really seem to be starting you guys early these days.
Either that, or you're referring to "pre-high school".

Nah, the coaching college was called "Pre-Uni" - haven't you ever heard of it?

 

[Felix Jones]

pfft dats nothing, in an exam they asked us to prove two triangles were similar from the diagram, and i managed to prove the wrong triangles, lost three marks there and one more mark bacuase it was related to the first part....in total lost 4 marks for idiotic careless mistake...ahgaghafgafhdfhashfdsadfjasghdfasj.

 

[FirenBoi]

In a maths tests I worked out most of the question, and wrote this for my answer:

2x = 2

Therefore

x =2

 

[harryboyles]

In my half-yearly just gone by, it had a question where so and so is paying off a loan every month with a given yearly interest rate, and after 25 years (300 months), the loan is paid off. What is the monthly repayments. Anyway, at first I made n = 25, forgetting to convert to months. I looked back and saw that I had forgotten to use months instead of years, and changed the figure accordingly. After the exam, I realised that while I had changed the number of terms involved, I hadn't changed the interest rate from p/a to p/m! To top it all off, it was one of those questions which stepped you through the process, and I'd written a note blaming the teacher on getting it wrong! Everybody knows that in 9 out of 10 cases, the exam paper is right and you are wrong. Sheesh!

 

[catzhernandez]

I've pretty much made every single mistake mentioned in this thread and them some. In all likelihood this trend of mine will probably continue unabated for the next year or so.

 

[conics2008]

Guys never ever make this mistake if it says show, make sure you show it.

One question said show that 2sin^2=1-Cos2x

I said When you expand this ( cos (x+x) ) you get this 2sin^2=1-cos2x.. try not to tell you're teacher to expand it, you should expand it you're self.. =)

 

[m.incognito]

In a maths tests I worked out most of the question, and wrote this for my answer:

2x = 2

Therefore

x =2

lol!!!

-3/2 + 1 = -2/3

oh and:

dy/dx = 2x - 10
set dy/dx to 0.
0 = 2x - 10
2x = 5
then, to top it all off, underneath i wrote:
THIS IS NOT POSSIBLE.

 

[kevinant]

In an assessment task, I managed to simplify a question right down in algebra and then get the following answer

2+2=8

Is any1 able 2 top that?

1+1=16 in statatistics