Can you have decimals in fractions?

[MrCodeDude]

Can you, is it proper? I got half-credit because I had decimals in my fraction for an answer on the test.
-- mrcodedude

 

[hdeck]

yes you *can* but it's not proper notation.

 

[AvesPKS]

Originally posted by: MrCodeDude
Can you, is it proper? I got half-credit because I had decimals in my fraction for an answer on the test.
-- mrcodedude

You can, but like rationalizing the denominator, or or converting an angle from degrees to radians, sometimes there are expectations on what you are to do with your answer.

 

[chiwawa626]

lol haggling for points? Usualy i get points for stuff ive done wrong and i dont seem to complain...all my friends just get pissed.

 

[MrCodeDude]

Here is my question

It just says "Write as a Fraction." Doesn't say "Write as a Proper Fraction."
-- mrcodedude

 

[Orsorum]

Decimals and fractions are two different methods of representing a number. If you were writing something like 2.3/8, you should have written 23/80 or 0.2875. Yes, you could... but conventionally it's a no no.

 

[Dudd]

It's not really proper. For example, if you had .5/4, you should convert that to 1/8. It's what people expect when dealing with fractions. If they wanted decimals, they'd take .125 instead pf 1/8.

 

[notfred]

Why would you do that? If you've already got a decimal numkber in there you might as well just make the whole thing one big decimal.

 

[MrCodeDude]

Originally posted by: chiwawa626
lol haggling for points? Usualy i get points for stuff ive done wrong and i dont seem to complain...all my friends just get pissed.

Heh, same here
-- mrcodedude

 

[illusion88]

Originally posted by: MrCodeDude
Here is my question

It just says "Write as a Fraction." Doesn't say "Write as a Proper Fraction."
-- mrcodedude

Here is something else. What math is this for? I know that anything past Adv. Algerbra my teachers never cared... anything before I would have gotten dinged on it.

 

[notfred]

Originally posted by: MrCodeDude
Here is my question

It just says "Write as a Fraction." Doesn't say "Write as a Proper Fraction."
-- mrcodedude

Your math problem is "write as a fraction"? Are you in 3rd grade?

 

[MisterPresident]

Technically, it's correct, however as AvesPKS said, there are certain standards in the math world. My teacher always rights "BAD!!" next to something like this, or having radicals in the denominator, etc, etc. If I were you though, I'd haggle like heck!

 

[MrCodeDude]

Originally posted by: notfred
Why would you do that? If you've already got a decimal numkber in there you might as well just make the whole thing one big decimal.

Because I have decimals on my test answer!
-- mrcodedude

 

[pandapanda]

count yourself lucky to have gotten half credit. It doesn't appear that you have a clue how to work the problem correctly. Please notice that the answer you got half credit for isn't even correct if you divide it through.

 

[gopunk]

Originally posted by: pandapanda
count yourself lucky to have gotten half credit. It doesn't appear that you have a clue how to work the problem correctly. Please notice that the answer you got half credit for isn't even correct if you divide it through.

what do you mean? i get 3.43636... when i divide it...

i think he should have gotten full credit, it's trivial to multiply the written answer by 1000/1000. not only should the bulk of the credit be assigned on the basis of whether or not he knows how to solve the problem (which he has demonstrated), the answer given is not incorrect.

 

[MrCodeDude]

Originally posted by: notfred

Originally posted by: MrCodeDude
Here is my question

It just says "Write as a Fraction." Doesn't say "Write as a Proper Fraction."
-- mrcodedude

Your math problem is "write as a fraction"? Are you in 3rd grade?

It's a repeating decimal and this is Pre-Calc / Trig.
-- mrcodedude

 

[MrCodeDude]

Originally posted by: pandapanda
count yourself lucky to have gotten half credit. It doesn't appear that you have a clue how to work the problem correctly. Please notice that the answer you got half credit for isn't even correct if you divide it through.

Umm yeah, learn to use a calculator.
-- mrcodedude

 

[gopunk]

jesus christ, i'm coming to the realization that some of you don't know what the little bar over the numbers means...

 

[MrCodeDude]

Originally posted by: gopunk
jesus christ, i'm coming to the realization that some of you don't know what the little bar over the numbers means...

It means SUBTRACT, right?
-- mrcodedude

 

[notfred]

Originally posted by: MrCodeDude

Originally posted by: notfred

Originally posted by: MrCodeDude
Here is my question

It just says "Write as a Fraction." Doesn't say "Write as a Proper Fraction."
-- mrcodedude

Your math problem is "write as a fraction"? Are you in 3rd grade?

It's a repeating decimal and this is Pre-Calc / Trig.
-- mrcodedude

That's pretty pointless as it's not trig and you'll never have to use that in a calculus class.

 

[MrCodeDude]

Originally posted by: notfred
That's pretty pointless as it's not trig and you'll never have to use that in a calculus class.

I don't know, all I know is that this book leads into the Calc AB book which then leads into the Calc BC book.
-- mrcodedude

 

[dighn]

definitely not proper

but in higher level maths they won't give a crap

 

[gwlam12]

mrcodedude still in school? how old are you? i always thought u were a 30 year old male employed at some tech company

 

[gopunk]

Originally posted by: dighn
definitely not proper

but in higher level maths they won't give a crap

exactly. this is what i intensely dislike about elementary, middle, and high schools... they get all anal over stuff that doesn't even matter.

 

[UncleWai]

This is like the easiest math but the teacher usually makes it look like very difficult

you do

3.4 + 0.036

34/10 + 36/990

combine them and it's your answer.
No you cannot have decimal in a fraction when you are taking pre-calc.

I don't like Pre-Calc, it just makes calculus a lot more confusing.