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Changing decimals to fractions

Casio FX-260 how do I change a decimal .75 to a fraction?

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You can always convert a fraction to a decimal. The reverse may not always be possible. Look at the example on the screen capture.

You may be lucky and recover a fraction you have just converted into decimal format, but you cannot just write 0.333333333333 and expect the calculator to convert it to 1/3: The true fraction 1/3 has an infinite number of 3's after the decimal mark.
changing decimals to fractions - 40959fa.jpg

Posted on Jun 22, 2010

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I also had the same problem but the answer above solved it. I think that the answer above is REALLY helpful and you should use it and recommend it to others as well!!!

Posted on Jan 21, 2015

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Posted on Jan 02, 2017

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How do I dived 9 dived by -1 5/7


1and 5/7 ==1.7142 (5/7 to get decimal point=.7142)

+ 9 divided by minus 1.7142= minus 5.1688

using the maths laws of multiplication and division of numbers where + and - indicies are used +X+ =+ and + X - = - and - X- = +

you will find answers on the web maths pages

Oct 06, 2014 | Office Equipment & Supplies

1 Answer

What are rational numbers


Use the words: decimal part, not decimal fractin
Any number whose decimal part is periodic (has a recurring pattern that repeats indefinitely) is equivalent to a rational number, IS a rational number
0.345 345 345 ... =345/999=115/333
In the following screen captures, discard the last digit if it does not belong to a period. It is the effect of rounding up of the calculator


3deb58af-3d70-4f55-adc1-35b7c9392031.jpg
Period is 345

7b3e81fc-c59c-455d-a5f2-e4b169925684.jpg
Period is 1
847342a7-5d3b-4604-b706-2ec9853c2dc7.jpg
Period is 09
8f929e6d-512c-41e2-a253-ffa88c0ab74e.jpg
Period is 79
0417fef1-6661-4f31-868f-8202884893ae.jpg

In general, if you have a decimal part of the form 0.d_1 d_2 d_3....d_n d_1 d_2 d_3 ...d_n ... where d_1 is the first digit of the period, d_2 is the 2nd digit of the period, ..., d_n is the n-th digit (and the last one) of the period, then the fraction representation of
0.d_1d_2...d_n d_1d_2... d_n ...=(d_1d_2...d_n)/(99...9) where the number of 9's in the denominator is equal to the number of digits in the period.
Once the fraction is found, one should reduce it to its simplest form.

Mar 02, 2014 | Office Equipment & Supplies

2 Answers

Is 0.08 less than 6%


Bot are numbers that are written in two different representations. To compare them safely you must convert them to the same representation.
0.08=8/100 or 8%
Now compare 8 % and 6%
Another way to do it is to convert 6% to its decimal representation then compare it to 0.08
6%=6/100=0.06
Since we have fractions let us just compare them. When comparing fractions, we first convert them to the same denominator (here it is 100). The greater one is the one with the greater numerator: 8 is greater than 6.
Conclusion: No, 0.08 is not less than 6%

Nov 05, 2013 | Office Equipment & Supplies

1 Answer

.72-.65=.07 How do I calculate the % for the


move the decimal 2 places to the right. 7%

Jan 27, 2012 | Office Equipment & Supplies

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