Various form of record of fractions can cause inconvenience. First, it is not always convenient to operate with decimal forms, secondly, they often reflect less exact values. And in this case you can transform such fraction to a normal look.
Instruction
1. Pay attention that it is about transformation of decimal fraction to a normal form. The return action can not always take place that is connected with the need of rounding arising in certain cases: if in the conditions of this task you have to operate only with exact values, it is necessary to operate only with a usual form of fraction.
2. Remember one property of fraction to which all possible transformations which are carried out with this form of record of number come down. It says that multiplication or divisions of numerator and a denominator into the same number does not lead to change of fraction. And it is not important in what form you write down number: in obvious or as a sine of the angle or having at all designated it by a variable x or at.
3. Do not forget also that in a case with decimal fraction you always can write down at once its denominator: it will be 10, 100, 1000, etc. The number of zero is defined by the number of signs after a comma. It is necessary to understand what to write down in numerator.
4. Write out all figures of decimal fraction in numerator. If it is 0.75, then in numerator will stand 75 if 1.35 - 135, respectively.
5. Start further transformations if those are possible. It can be required for the successful solution of a task. But even if to you rather just to transform decimal fraction to an ordinary form, do not stop on one action. Consider that rules of correct mathematical record demand observance of two rules. First, the received fraction should not be reduced. Secondly, if the numerator is more than denominator, it is better to write down fraction in its the third to a form – the mixed number.
6. Use property of fraction to check a possibility of reduction. The denominator, the less options to you are less it is necessary to touch. If it is 10, then check whether the numerator is divided into 2, 5, 10. If 100 – on 2, 4, 5 and other dividers 100.