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Sometimes it is easier to work with fractions that are not reduced. For example, if you wanted to compare whether 6/10 or 13/20 was larger, you would not need to reduce 6/10; in fact you would want to rewrite 6/10 as 12/20 so you could compare.

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Q: Why not always reduce fractions to lowest terms?

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It means to reduce fractions to their lowest terms as for example 4/8 = 1/2 in its lowest terms

reduce

In order to reduce fractions to their lowest terms

Yes it can be done and, at times, is a very good idea.

Find the GCF of the numerator and the denominator. Divide each of them by that number. If the GCF is 1, the fraction is already in its lowest terms.

Reduce them to their lowest terms

It is already in lowest terms.

It helps to reduce fractions to their lowest terms

It is not possible to reduce a percent to it's lowest terms. It is possible to reduce a fraction to it's lowest terms, however.

Finding the GCF helps to reduce fractions to their lowest terms. Finding the LCM helps to add and subtract fractions with different denominators by finding their lowest common denominator.

Only fractions can be in lowest terms. Since 2160 is a whole number, it is already in lowest terms.

LCM is used to find the lowest common denominator in fractions HCF is used to reduce fractions to their simplest terms

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