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Why do you need a common denominator when adding and subtracting fractions but not when you multiply or divide fractions?
Wiki User
∙ 13y ago
For subtracting and adding you cannot add or subtract unalike things. For multiplication and division you can multiply by whatever you want. In some maths you even multiply by variables such as "x". Or divide by them.
Wiki User
∙ 13y ago
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When adding or subtracting fractions you must get a?
A Common Denominator
Before adding or subtracting Why are fractions turned into like fractions?
They have to have the same denominator.
Do you need a common denominator for dividing fractions?
No only when adding or subtracting fractions a common denominator is needed
What is always needed when adding and subtracting fractions?
a common denominator
What two operations reequire a common denominator?
Adding and subtracting fractions.
When adding or subtracting fractions you must get a?
A Common Denominator
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.
Do you need a common denominator for dividing fractions?
No only when adding or subtracting fractions a common denominator is needed
What is always needed when adding and subtracting fractions?
a common denominator
Why do you have to have a common denominator?
A common denominator is needed when adding or subtracting fractions of different denominators.
When adding or subtracting two fractions what is a necessary requirement?
A common denominator.
What two operations reequire a common denominator?
Adding and subtracting fractions.
Does division need a common denominator?
No, You only need a common denominator when adding or subtracting fractions.
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 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.
How do you minnous fractions?
Subtracting fractions is similar to adding fractions. If the fractions have the same denominator, you subtract the numerators. If the fractions have different denominators, you have to convert to a common denominator first.Subtracting fractions is similar to adding fractions. If the fractions have the same denominator, you subtract the numerators. If the fractions have different denominators, you have to convert to a common denominator first.Subtracting fractions is similar to adding fractions. If the fractions have the same denominator, you subtract the numerators. If the fractions have different denominators, you have to convert to a common denominator first.Subtracting fractions is similar to adding fractions. If the fractions have the same denominator, you subtract the numerators. If the fractions have different denominators, you have to convert to a common denominator first.
