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There are times when working with fractions is more convenient than working with decimals.
No, no repeating decimal is irrational. All repeating decimals can be converted to fractions. They are, however, non-terminating.
Because repeating decimals can be written as simple fractions.0.22222 repeating = 2/9The formal definition of a rational number is a number that can be in the form p/qwhere p and q are integers and q is not equal to zero.
The fraction 1/3=0.3333333... In this case it is better to use fractions just like in all cases. There will be no case when decimals will work better than fractions however, if a test says to use decimals; USE THEM!
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