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Approximating a fraction would depend upon how the fraction is expressed, which would either be in the form of one number divided by another number, or by a decimal. For example, one third is either one divided by three (1/3), or it is .3333333333333333 (etc.). In the latter case, you can decide how many decimal points you want to give, such as, one third is aproximately .333; there would be no point in approximating the 1/3 format of one third. But suppose the fraction was .3337; that is slightly larger than a third, but it could still be approximated as a third. Or, 100/301 which is slightly less than a third, could be approximated as a third.
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What is an everyday example where a fraction is impossible to use you have to use a decimal?
There is no such example. If you cannot use an exact fraction then there will not be an exact decimal that you can use instead. And, if you are using an approximate decimal, you could use an approximate fraction instead.
What is a fraction that is sometimes used to approximate pi?
22/7
What is the closest approximate fraction form of the number Pi?
It is: 22/7
What does the fraction three fourteenths equal in decimal?
3/14 = 0.2142857 (approximate)
What is the ratio of 20 to 56?
The ratio is the fraction 5/14 or the approximate percentage 35.7%.
