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a common denominator

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Q: What is always needed when adding and subtracting fractions?
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Related questions

Do you need a common denominator for dividing fractions?

No only when adding or subtracting fractions a common denominator 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 meaning of LCD Fraction?

The Lowest Common Denominator is needed when adding or subtracting fractions.


When is it useful to find the LCM or GCF of two 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.


What is an LCD in math?

LCD means lowest common denominator which is needed when adding or subtracting fractions that have different denominators.


What is least common multiple used for?

When adding or subtracting fractions with different denominators then the least common multiple amongst them is needed to find the lowest common denominator.


What is the relationship between least common multiple and greatest common faction?

Least common multiple is needed to find the least common denominator when adding or subtracting fractions with different denominators Greatest common factor is needed when reducing fractions to their lowest terms


What information does the least common multiple of two numbers provide in a problem?

When adding or subtracting fractions with different denominators the lowest common denominator is needed and is found by finding the lowest common multiple of the denominators.


What is needed to make an object change phase?

heat. adding or subtracting


When adding or subtracting decimals how many digits should the answer contain?

as many as needed to satisfy the accuracy needed.


What is always needed to add fractions?

Fractions! Otherwise you don't have anything to add.


Why do you estimate when adding or subtracting decimal numbers?

In more than 40 years as a mathematician, I have never needed to do so.