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

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โˆ™ 2011-03-03 21:20:38
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Q: Why are equivalent fractions important when adding and subtracting fractions?
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Related questions

How do you subtract fractions with negative fractions?

Subtracting a negative fraction is the same as adding its positive equivalent.


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

What is the definition of Adding and Subtracting Like Fractions


How are adding fractions different?

When adding or subtracting fractions their denominators must be the same


Who invented adding and subtracting fractions?

Me


What must you do first before adding or subtracting unlike fractions?

you must make the fractions equivalent and with the same denomenator


How are adding and subtracting fractions similar?

Subtracting a fraction is the same as adding its negative.


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.


What are the rules for adding fractions?

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


How do you solve a fraction problem when you don't have the same denominator?

If you are adding or subtracting unlike fractions, convert them to equivalent fractions with a common denominator.


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

Making sure the denominators are the same.


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.


How can knowing the LCM help you add subtract and multiply fractions?

When adding and subtracting unlike fractions, it is necessary to find the LCM of the denominators, called the least common denominator. Once you have found the LCD, you can convert the fractions to equivalent fractions with a common denominator and proceed with the adding and/or subtracting. Finding an LCM will have no effect on multiplying fractions.


Why might it be important to know how to calculate least common multiples?

It helps in the adding and subtracting of fractions.


Adding and subtracting fractions?

Pulled and mulled


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.


How is subtracting fractions like adding fractions?

You need a common denominator for both.


Before adding or subtracting Why are fractions turned into like fractions?

They have to have the same denominator.


Why is multiply and divide fractions is important?

because it is easier than adding and subtracting so many times??


What are the rules for adding subtracting multiplying and dividing fractions?

no answer


When adding or subtracting fractions you must get a?

A Common Denominator


Why subtracting a negative number is equivalent to adding a positive number?

equivalent to subtracting a negative


When would you need to find the LCM?

When you are adding and subtracting fractions.


When adding or subtracting fractions you need to?

Find a common denamonator.


What is always needed when adding and subtracting fractions?

a common denominator


When would you need to know what LCM is?

When you are adding or subtracting fractions.

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