Long division
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@Snooder I've rarely had a ban on simple calculators during maths tests in high school, or at university. (Generally they ban scientific calculators which are capable of algebraic calculation). If there were, the tests were devised as not to require the use of a calculator. And anyway, most maths already in high school, for instance, is of the kind where you can get away with fractions and are actually expected to (since they're an exact form).
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@Snooder said in Long division:
Lol, the beauty of knowing long division is that you dont need a calculator.
Right but you're only not allowed a calculator in some exams. In the real world it's not an issue. Calculators everywhere.
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@Snooder said in Long division:
Most exams I took, we weren't allowed to use one. Even if you were calculating 22/7, you just did it and showed your work out to however many decimal places the test asked for.
Most exams I took, 22/7 indicated an earlier error in calculations.
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@Snooder said in Long division:
Even if you were calculating 22/7, you just did it and showed your work out to however many decimal places the test asked for.
I happen to have memorized the digits of 1/7, so I can tell right away the result is 3.142857142857142857142857142857142857142...
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@Zecc I have memorized 32-bit float approximation of pi. That's the best I can do and I don't plan to ever try to improve that.
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@Gąska said in Long division:
@Snooder said in Long division:
Most exams I took, we weren't allowed to use one. Even if you were calculating 22/7, you just did it and showed your work out to however many decimal places the test asked for.
Most exams I took, 22/7 indicated an earlier error in calculations.
Or that the teacher wanted to teach you about pi...
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@Snooder cooking classes were my favorite!
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@Gąska said in Long division:
@Zecc I have memorized 32-bit float approximation of pi. That's the best I can do and I don't plan to ever try to improve that.
In decimal or binary? Because why the fuck would you memorize that?
I happen to know 10 places but wouldn't know how to round it to get a 32bit float out of it.INB4 why not!
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@topspin said in Long division:
@Gąska said in Long division:
@Zecc I have memorized 32-bit float approximation of pi. That's the best I can do and I don't plan to ever try to improve that.
In decimal or binary?
Decimal digits for binary float.
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@Gurth said in Long division:
There’s a strange kind of similar stupidity in this country regarding the number 4 when hand-written: I normally write it looking like this: 4.
Hand-written, the upper part should be open, because otherwise it runs the risk of looking like a 9. I have never mistaken anyone's 4 for a U.
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@Tsaukpaetra said in Long division:
@topspin said in Long division:
Yeah, that’s a square root.
I thought square root was (124)1/2 ?
Yes, because if you write
, there's the risk of it getting mistaken for a gun.
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@djls45 said in Long division:
This is what I was taught, way back in the early belt-onion days.
Now, I just use calc.exe
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@Gąska said in Long division:
@topspin said in Long division:
@Tsaukpaetra Yeah, that’s a square root.
Looks like 4th root to me.
No, this is a 4th root:
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@jinpa said in Long division:
Hand-written, the upper part should be open, because otherwise it runs the risk of looking like a 9.
Wait, that took me a little while to figure out. But I guess you’re saying is that you write a 9 like this:
Whereas around here, it’s taught as:
which means there’s no risk mistaking a “pointed” 4 for one. (It does lead to the problem that you often can’t tell a 9 from a lowercase g, though, which can be important with things like written-down passwords, is my experience. But then, with a 9 like in the first image, you can mistake it for a q just as easily under the same circumstances. So I guess neither is better in this respect.)
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@Gurth I worked in phone retail shop in Chicago for a while. The first few days I've spent on unlearning writing 1 with two strokes, because customers routinely mistook it for 7.
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@topspin said in Long division:
This thread has gotten far more interesting than I thought it would become.
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@Gąska said in Long division:
The first few days I've spent on unlearning writing 1 with two strokes, because customers routinely mistook it for 7.
I write 1 with a single stroke, and 7 with three…
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@dkf that's what I ended up doing.
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@Gurth said in Long division:
@jinpa said in Long division:
Hand-written, the upper part should be open, because otherwise it runs the risk of looking like a 9.
Wait, that took me a little while to figure out. But I guess you’re saying is that you write a 9 like this:
Whereas around here, it’s taught as:
which means there’s no risk mistaking a “pointed” 4 for one. (It does lead to the problem that you often can’t tell a 9 from a lowercase g, though, which can be important with things like written-down passwords, is my experience. But then, with a 9 like in the first image, you can mistake it for a q just as easily under the same circumstances. So I guess neither is better in this respect.)
9 and g or qshould be easy enough to tell apart based on vertical alignment.
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@djls45 said in Long division:
@Gurth said in Long division:
@jinpa said in Long division:
Hand-written, the upper part should be open, because otherwise it runs the risk of looking like a 9.
Wait, that took me a little while to figure out. But I guess you’re saying is that you write a 9 like this:
Whereas around here, it’s taught as:
which means there’s no risk mistaking a “pointed” 4 for one. (It does lead to the problem that you often can’t tell a 9 from a lowercase g, though, which can be important with things like written-down passwords, is my experience. But then, with a 9 like in the first image, you can mistake it for a q just as easily under the same circumstances. So I guess neither is better in this respect.)
9 and g or qshould be easy enough to tell apart based on vertical alignment.
You don't read much handwriting, do you?
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@djls45 said in Long division:
9 and g or qshould be easy enough to tell apart based on vertical alignment.
Not if you’ve been taught to write in what, decades later, you recognise as lowercase numerals. And that’s assuming there’s a line on the paper for you to write on.
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@topspin said in Long division:
@Gąska said in Long division:
@topspin said in Long division:
@Tsaukpaetra Yeah, that’s a square root.
Looks like 4th root to me.
You are right, of course.
And I suppose you also can't distinguish between these sorts of fonts?
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@Tsaukpaetra said in Long division:
@djls45 said in Long division:
@Gurth said in Long division:
@jinpa said in Long division:
Hand-written, the upper part should be open, because otherwise it runs the risk of looking like a 9.
Wait, that took me a little while to figure out. But I guess you’re saying is that you write a 9 like this:
Whereas around here, it’s taught as:
which means there’s no risk mistaking a “pointed” 4 for one. (It does lead to the problem that you often can’t tell a 9 from a lowercase g, though, which can be important with things like written-down passwords, is my experience. But then, with a 9 like in the first image, you can mistake it for a q just as easily under the same circumstances. So I guess neither is better in this respect.)
9 and g or qshould be easy enough to tell apart based on vertical alignment.
You don't read much handwriting, do you?
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@Gąska said in Long division:
@Gurth I worked in phone retail shop in Chicago for a while. The first few days I've spent on unlearning writing 1 with two strokes, because customers routinely mistook it for 7.
As in instead of writing '1' you'd write 'I'? Yeah, I still struggle with that...
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@boomzilla Well both are a
T, one is serifed and the other sans-serif. I usually use italics for scalars, bold upright for vectors, bold upright caps for matrices, and fraktur caps (\mathfrak) for sets. You can of course also overload meaning on serifs (e.g. same vector in a different basis), but that’s getting a little heavy on the notation.
Filed under:
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@admiral_p said in Long division:
When you become tidy enough, you can already use calculators.
I was using calculators before I even enrolled in school. They're not hard to figure out.
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@Gąska said in Long division:
@Tsaukpaetra said in Long division:
@djls45 said in Long division:
@Gurth said in Long division:
@jinpa said in Long division:
Hand-written, the upper part should be open, because otherwise it runs the risk of looking like a 9.
Wait, that took me a little while to figure out. But I guess you’re saying is that you write a 9 like this:
Whereas around here, it’s taught as:
which means there’s no risk mistaking a “pointed” 4 for one. (It does lead to the problem that you often can’t tell a 9 from a lowercase g, though, which can be important with things like written-down passwords, is my experience. But then, with a 9 like in the first image, you can mistake it for a q just as easily under the same circumstances. So I guess neither is better in this respect.)
9 and g or qshould be easy enough to tell apart based on vertical alignment.
You don't read much handwriting, do you?
Those are all
g
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@Tsaukpaetra you're blind.
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@Gąska said in Long division:
@Tsaukpaetra said in Long division:
@djls45 said in Long division:
@Gurth said in Long division:
@jinpa said in Long division:
Hand-written, the upper part should be open, because otherwise it runs the risk of looking like a 9.
Wait, that took me a little while to figure out. But I guess you’re saying is that you write a 9 like this:
Whereas around here, it’s taught as:
which means there’s no risk mistaking a “pointed” 4 for one. (It does lead to the problem that you often can’t tell a 9 from a lowercase g, though, which can be important with things like written-down passwords, is my experience. But then, with a 9 like in the first image, you can mistake it for a q just as easily under the same circumstances. So I guess neither is better in this respect.)
9 and g or qshould be easy enough to tell apart based on vertical alignment.
You don't read much handwriting, do you?
Yeah. Try and read handwritten email addresses. (I'm currently getting dozens of entries for some dog shows with people who are not in my database. I've gotten pretty good at guessing. Only had one bounce so far.)
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@dcon said in Long division:
@Gąska said in Long division:
@Tsaukpaetra said in Long division:
@djls45 said in Long division:
@Gurth said in Long division:
@jinpa said in Long division:
Hand-written, the upper part should be open, because otherwise it runs the risk of looking like a 9.
Wait, that took me a little while to figure out. But I guess you’re saying is that you write a 9 like this:
Whereas around here, it’s taught as:
which means there’s no risk mistaking a “pointed” 4 for one. (It does lead to the problem that you often can’t tell a 9 from a lowercase g, though, which can be important with things like written-down passwords, is my experience. But then, with a 9 like in the first image, you can mistake it for a q just as easily under the same circumstances. So I guess neither is better in this respect.)
9 and g or qshould be easy enough to tell apart based on vertical alignment.
You don't read much handwriting, do you?
Yeah. Try and read handwritten email addresses. (I'm currently getting dozens of entries for some dog shows with people who are not in my database. I've gotten pretty good at guessing. Only had one bounce so far.)
My email address has an underscore in it so when I have to write it I am always worried they'll either not see the underscore if I put it too low on the line or I put it too high and they assume it is a hyphen. Then again half the time I don't want emails from them in the first place so maybe it is a good thing.
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@Lathun And then there's automated systems telling you your email address isn't valid.
I've had that happen once or twice when the domain part contained a dash.
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@PleegWat that'd be because a domain can't contain a dash.
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@kazitor Is that so? Let me ask on experts-exchange.com
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@Zecc
did you mean "experts—exchange.com"?
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