How do I divide Decimals?
For example:

30.72 
÷ 9.60
and 22.0  ÷ 2.0
and
You don't have to answer all three, just pick one or do all three if you want, would appreciate that. Just need a simple explanation on how to divide decimals.


Re: How do I divide Decimals?
Re: How do I divide Decimals?
22.0÷ 2.0=11.0
what is 11.0*2=???
Re: How do I divide Decimals?
Quote:
Originally Posted by
skeeter
That is a long way to divide, I don't have that time but luckly division works just the same with decimals as with normal numbers apart from the decimal points which is okay because I'll have multiple choice.
Re: How do I divide Decimals?
Quote:
Originally Posted by
nerdo 22.0÷ 2.0=11.0
what is 11.0*2=???
Not really sure what your getting at there, I mean, that requires too much thinking when it's not needed.
I know what I'm doing now, thanks though.
Re: How do I divide Decimals?
He's basically asking, what is 11x2?
Re: How do I divide Decimals?
You can multiply the decimal out of the numerator and denominator. For example:
$\displaystyle \frac {30.72}{9.6} \cdot \frac{100}{100} = \frac {3072}{960}\ from\ which\ simplifies\ to\ \frac{16}{5} = 3.2 $
Re: How do I divide Decimals?
I thought trailing zeros after the decimal place counts as a significant digit? So 9.60 would be 3 significant digits which means the answer is 3.20? Or is this not correct
Re: How do I divide Decimals?
Don't forget, the right hand side of the decimal point is the fractional part. So 0.2 is equal to $\displaystyle 2 \times 10^{1} $. Which is also equal to 0.20, from which can also be regarded as $\displaystyle \frac{1}{5}. $ 20/100 simplifies to 1/5.