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How were you at maths?

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SaveFerris
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15 Feb 2017, 3:22 pm

liveandrew wrote:
SaveFerris wrote:
Alexinwonderland wrote:
I have dysclaculia too. I used to cry during maths lessons sometimes because it really overwhelmed me.


I think I'm average when it comes to maths ? I remember crying in a maths class when I was called to the front of the class to recite my 7 times table - my mind went blank after 21 and I just broke down ( I think I'm a little traumatised of this memory ).


Times-tables are still my bête noire - I've never managed to learn them. I manage by using addition or by using simple multiplication like n x 10 (and possibly halving that for x 5) and then using addition or subtraction.


Ha Ha , thats exactly what I do and believed everyone else did it that way too


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Dear_one
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15 Feb 2017, 3:37 pm

I do my times tables by counting up by various increments. I've always worked on the theory that if I need to memorize something, I will just by using it a lot, so I never make efforts on sheer memory work. A few points on the times table do pop up automatically, including the rather interesting point that the rather odd number 7 almost approaches regularity at 7 X 7 = 49 before wandering off again like a chess knight. So, when I saw a game show host almost lose his mind over a kid who knew what day of the week it would be in 100 days, I saw how it was done immediately. (7 X 7) + (7 X 7) = 98 days, so 100 will be two days farther into the week than today.



Last edited by Dear_one on 15 Feb 2017, 4:22 pm, edited 1 time in total.

liveandrew
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15 Feb 2017, 3:49 pm

Dear_one wrote:
I do my times tables by counting up by various increments. I've always worked on the theory that if I need to memorize something, I will just by using it a lot, so I never make efforts on sheer memory work. A few points on the times table do pop up automatically, including the rather interesting point that the rather odd number 7 almost approaches regularity at 7 + 7 = 49 before wandering off again like a chess knight. So, when I saw a game show host almost lose his mind over a kid who knew what day of the week it would be in 100 days, I saw how it was done immediately. (7 X 7) + (7 X 7) = 98 days, so 100 will be two days farther into the week than today.

Nice, I like that. It's all patterns!


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SaveFerris
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15 Feb 2017, 4:07 pm

liveandrew wrote:
Dear_one wrote:
I do my times tables by counting up by various increments. I've always worked on the theory that if I need to memorize something, I will just by using it a lot, so I never make efforts on sheer memory work. A few points on the times table do pop up automatically, including the rather interesting point that the rather odd number 7 almost approaches regularity at 7 + 7 = 49 before wandering off again like a chess knight. So, when I saw a game show host almost lose his mind over a kid who knew what day of the week it would be in 100 days, I saw how it was done immediately. (7 X 7) + (7 X 7) = 98 days, so 100 will be two days farther into the week than today.

Nice, I like that. It's all patterns!


Me & my girlfriend just had a discussion about how we do times tables.

The first question was 7 x 7

GF = (2 x 7=14) , (2 x 14 = 28) , (28 + 28 = 56 ) - 7 ( which I find bizarre )
Me = I knew the answer was 49 from memory but if I didn't it would have been as described by LiveAndrew above

The 2nd question was 8 x 9

GF = Just makes it the 10 times table but subtracts the first number ( 8 x 10 = 80 - 8 = 72 )
Me = I minus 1 from the first number then add a number to this that makes 9 ( 8 - 1 =7 ) ( 7+2 = 9 ) ( which she said is bizzare )


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liveandrew
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15 Feb 2017, 4:13 pm

SaveFerris wrote:
Me & my girlfriend just had a discussion about how we do times tables.

The first question was 7 x 7

GF = (2 x 7=14) , (2 x 14 = 28) , (28 + 28 = 56 ) - 7 ( which I find bizarre )
Me = I knew the answer was 49 from memory but if I didn't it would have been as described by LiveAndrew above

The 2nd question was 8 x 9

GF = Just makes it the 10 times table but subtracts the first number ( 8 x 10 = 80 - 8 = 72 )
Me = I minus 1 from the first number then add a number to this that makes 9 ( 8 - 1 =7 ) ( 7+2 = 9 ) ( which she said is bizzare )


1) 7 x 7 = (10 x 7) / 2 (+ (2 x 7)) = 49
2) 8 x 9 = (10 x 8 ) - 8 = 72

Nuts, isn't it! :)


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zoejane
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15 Feb 2017, 4:31 pm

Terrible. I can't manipulate numbers in my head (and have difficulty remembering them!). I think I'm bordering on having dyscalculia but I managed a "C" for GCSE maths through a great deal of sheer hard work and my dad's help. I was so relieved that I never had to do maths again!

I could never accept what the teachers said if they were to say something like "then move the plus sign to the other side of the equation" (or whatever!). I was always compelled to ask "but WHY???" and they couldn't seem to answer me satisfactorily so I never remembered what you were supposed to do...because I never understood *why* you were supposed to do it!



Dear_one
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15 Feb 2017, 4:49 pm

Whenever I got stuck on a "why" question like that, or a "how" one, I'd do the same operations on just single-digit numbers I could easily follow to see how the procedure worked.



zoejane
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15 Feb 2017, 5:24 pm

Dear_one wrote:
Whenever I got stuck on a "why" question like that, or a "how" one, I'd do the same operations on just single-digit numbers I could easily follow to see how the procedure worked.


That seems like a good way of looking at it :)



Surf Rider
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15 Feb 2017, 9:08 pm

I do pretty well with math, but I guess that's relative. I got through multivariable calculus and partial differential equations, so yeah, I guess I'm good at math. But when I compare myself to the other physics and math students I work with, then no, I'm not that good at math.


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