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Q: What do fractions need to have to compare them?

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I am not entirely sure what you mean, but if you need to add, subtract, or compare two fractions, they need to have the same denominator.

You DO need a common denominator to add, subtract, or compare fractions. You DO NOT need a common denominator to multiply or divide fractions.

you compare them

You can either convert fractions to decimals and compare the decimal numbers; find equivalent fractions with the same denominator and then compare numerators or find equivalent fractions with the same numerator and then compare denominators.

Two ways: convert them to decimals or convert them to similar fractions and compare the numerators.

To compare two fractions, convert them to a common denominator.To compare two fractions, convert them to a common denominator.To compare two fractions, convert them to a common denominator.To compare two fractions, convert them to a common denominator.

You can compare similar fractions by looking at their numerators. You can compare dissimilar fractions by converting them to similar fractions and looking at their numerators. You can convert a dissimilar fraction to a similar fraction by finding the least common denominator.

You cannot compare fractions by using the GCF since GCF determines the common factors of both fractions. Instead, use the LCD to compare the fractions. Find the LCM of the denominator terms of the fractions. Then, obtain the fractions with the common denominators. Finally, compare the numerator values to determine which fraction is the greatest/least.

you have to compare the common fractions

To compare fractions, convert both of them to a common denominator.

Find the equivalent fractions with the same denominator (the least common multiple) and then compare the numerators.

You need to be able to compare two fractions at a time, to see which one is greater. One way to do this is to convert two fractions at a time to a common denominator. It need not be the least common denominator - any common denominator will do, therefore you can just multiply the two denominators. Another way to compare fractions is to convert them to decimal. This can quickly be done with a calculator.

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