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โˆ™ 2013-05-08 02:11:39
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Q: How do you add and subtract fractions with the same denominator?
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Related questions

Do you add and subtract like and unlike fractions in the same way?

no, to add and subtract like and unlike fractions the denominator has to be the same,


How are fractions under addition?

In order to add or subtract fractions, they must have the same denominator.


How do you add or subtract fractions when negative?

The same as with positive ones. Make sure they have the same denominator and add or subtract their numerators.


How do you add and subtract improper fractions with different denominator?

he fact that they are improper is irrelevant. Re-scale the fractions so that they have the same denominator and thenadd or subtract as required.


What you need to add or subtract fractions?

You need a common denominator in order to add or subtract fractions.


How do you add and subtract by fractions?

If the fractions have the same denominator, add and subtract the numerators as if the denominators weren't there and put the result over that denominator. Reduce if possible. If the fractions have different denominators, find the LCM of the denominators and convert the fractions to equivalent fractions with like denominators. Then add and subtract the numerators as if the denominators weren't there and put the result over that denominator. Reduce if possible.


Why do you need a common denominator with fractions?

You can add or subtract fractions only if they are "like" fractions, that is, only if they have the same denominator - unless you know your fractions really well.


How do you add or subtract dissimilar fractions?

You first convert them to similar fractions, i.e., to fractions that have the same denominator.* Step one: find a common denominator.* Step two: convert both fractions to equivalent fractions that have that denominator.


When do you need a common denominator?

The denominators must be the same before you can add or subtract fractions.


Fractions can be added and subtracted only if they're fractions?

We can only add or subtract fractions if they have the same denominators


When you add or subtract fractions with the same denominators what happens to the denominator in your answer?

It stays the same. Only the numerators change.


Why do you need a common denominator?

Common Denominator means that the denominators in two (or more) fractions are common, or the same. The common denominator is important because before you can add or subtract fractions, the fractions need to have a common denominator.Sometimes fractions have different denominators, like 2/3 and 3/4. If you want to add or subtract them, they need to have the same denominator. In order to do that, you find a common denominator which is the same thing as a common multiple, only with denominators.


What is the meaning of addition and subtraction of similar fraction?

Similar fractions are fractions with the same denominator. In order to add or subtract fractions they need to be similar.


When 2 or more fractions have same denominator?

If you are adding or subtracting fractions with the same denominator, you can add or subtract the numerators and keep the denominator the same. 1/8 + 3/8+ 3/8 = 7/8, for example


Why do you find common denominators?

In order to add or subtract one fraction from another, they must have a common denominator, or the same denominator. That's because it's impossible to add two fractions that have a different number of parts.


Why are equivalent fractions important when adding and subtracting fractions?

Because to add or subtract two fractions you first have to find equivalent fractions for both which have the same denominator.


When you add fractions do they have to have the same denominator?

Yes you have to add with the same denominator. when ever you do fractions they have to have the same denominator no matter what. So thats a yes


What is the requirement to add or to subtract fractions?

The denominator (bottom number) must be the same for all the fractions being added or subtracted together.


What are compatible numbers for fractions?

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.


What are fraction that have same denominator called?

They are called like fractions.In order to add or subtract fractions you will usually need to convert them to like fractions. Then you simply add or subtract the numerators (as required) to form the numerator of the answer. The same (or common) denominator is the denominator of the answer. You may need to simplify the resulting fraction.


Find the LCD then add or subtract?

To add or subtract fractions the denominators must be the same - then the numerators are added or subtracted with the denominator being kept the same.When adding or subtracting fractions with different denominators, the fractions must first be converted into equivalent fractions with the same denominator and then the (new) numerators can be added or subtracted as required.For the denominator for these equivalent fractions, the original denominators can all be multiplied together, but this can lead to having to work with very large numbers; a better choice for the denominator is the smallest number that all the denominators divide into, their Least Common Multiple (LCM) - this is is then used as the denominator for the equivalent fractions and is called the Least Common Denominator (LCD) of the fractions.First you find the LCD okay??? Then you have to add or subtract. What they mean by that is that once you've found your lcd add or subtract..xx hope i helped :)


How do you add mixed numbers?

Find theLeast Common Denominator (LCD)Find the equivalent fractions.Add or subtract the fractions and add or subtract the whole numbers.Write your answer in lowest terms.


When is a common denominator needed and when is one not needed?

A common denominator is required to add or subtract fractions and not otherwise.


How do you add or subtract fractions with unlike denominators?

convert at least one of them so that they have the same denominator, then proceed with the addition or subtraction


Why do you need to use common denominator?

To get the right answer when you add or subtract unlike fractions.

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