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Make them into decimals. Make them into decimals.

Q: How do you compare fractions without common denominators?

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Convert unlike fractions to equivalent fractions with common denominators by finding the LCM of the denominators.

multiply the denominators

If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator.

You use them when there are 2 fractions with different denominators.

Because trying to add them without a common denominator would yield an incorrect answer.

Related questions

Convert unlike fractions to equivalent fractions with common denominators by finding the LCM of the denominators.

Because when you compare fractions with the same denominators, you do not have to find the least common denominator (LCM or LCD).

First you have to compare the whole numbers. When the whole numbers are the same, compare the fractions. If the denominators of the fraction are the same, compare the numerators. If the denominators are different, convert them to have the least common denominators. Then compare the numerators.

You can convert them to equivalent fractions with like denominators, then simply compare the numerators.You might also convert each fraction to a decimal (divide the numerator by the denominator); then you can also compare them.

If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators.

multiply the denominators

If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator.

The least common denominator is the least common multiple of the denominators of the fractions.

Multiply them by each other.

Multiplying the denominators together of two or more unlike fractions will get you a common multiple.

Dissimilar fractions.

You use them when there are 2 fractions with different denominators.