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When you add or subtract fractions with like denominators, you just add or subtract the numerators and put them over the same denominator. For example,

3/5 - 2/5 = (3 - 2)/5 = 1/5

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โˆ™ 2009-02-25 16:02:14
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Q: Can you explain adding and subtracting fractions with like denominators?
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Related questions

How are adding fractions different?

When adding or subtracting fractions their denominators must be the same


What is the definition of adding and subtracting fractions with unlike denominators?

What is the definition of Adding and Subtracting Like Fractions


What are the rules for adding fractions?

Ensure that the denominators are the same when adding or subtracting fractions.


Fractions Have The Same Denominators?

Not always but they need to have the same denominators when adding or subtracting them.


How do you minnous fractions?

To subtract fractions with like denominators, subtract the numerators , and write the difference over the denominator. Example : Find 45โˆ’25 . Since the denominators are the same, subtract the numerators.


What did you learn from adding and subtracting fractions?

I learned to always change the denominators before adding or subtracting the numerators. You must always have a common denominator before adding or subtracting.


Before adding or subtracting two fractions they are converted into like fractions Explain with examples why this is necessary?

Before adding or subtracting two fractions they are converted into like fractions. Explain with examples why this is necessary.


Why does the equivalent fraction make adding and subtracting fractions easier?

You cannot add or subtract fractions with different denominators. If the denominators are different then you need to work with equivalent fractions.


how to rename fractions using LCM?

When adding or subtracting fractions with different denominators their lowest common denominator must be found first by using the LCM of their denominators


When will you need to find the multiples and factors?

When adding or subtracting fractions with different denominators and when reducing fractions to their lowest terms


How does finding the least common multiple help you add fractions?

Because when adding or subtracting fractions the denominators must have the same values


When is it useful to find the LCM or GCF of two or more numbers to solve a problem?

When adding or subtracting fractions with different denominators and when reducing fractions to their lowest termsWhen adding or subtracting fractions with different denominators their lowest common multiple is needed and when reducing fractions to their lowest terms their greatest common factor is needed.


Why do you have to have a common denominator?

A common denominator is needed when adding or subtracting fractions of different denominators.


What is the most important thing about adding and subtracting fractions?

Making sure the denominators are the same.


How do you check you math with adding fractions?

When adding or subtracting fractions first make sure that the denominators are the same if they aren't then find the lowest common denominator and alter the fractions accordingly


Why do the denominators have to be the same for both fractions when adding and subtracting?

It makes it easier. So both of the fractions are proportional to each other.


How is the least common multiple used when adding and subtracting fractions?

When adding and subtracting unlike fractions, find the LCM of the denominators and convert them to it. In this case, it's called the least common denominator, but it's the same process.


What is the first thing you should look for when adding or subtracting fractions or mixed numbers?

common denominators.


When adding or subtracting fractions do you have to have the numerator the same or denominator?

The denominators must be the same, the numerators can be different.


Can you multiply fractions that have a different demonminator?

Yes. When multiplying and dividing fractions your denominators do not have to be the same. The denominators only haveto be the same if you are subtracting or adding them.


How are lcm's used in adding or subtracting fractions?

To add and subtract fractions, you need common denominators. To find the common denominator, take the LCM of the denominators you wish to add or subtract.


How do you subtract improper fractions with different denominators?

It's the same thing as adding or subtracting normal fractions - just make sure both fractions have the same denominators (by either multiplying the denominators or simplifying the fraction - whichever the question needs).


How is finding the LCM revelant when adding and subtracting fractions?

To add and subtract fractions, you need common denominators. To find the common denominator, find the LCM of the denominators you wish to add or subtract.


How is the LCM used in everyday life?

When adding or subtracting fractions with different denominators the LCD is found with the LCM.


What is the practical use of HCF and LCM?

For adding and subtracting fractions with different denominators and reducing them to their lowest terms.