0
Why do fractions need a common denominator when adding subtracting?
Wiki User
∙ 8y ago
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.
shanshan Jiang
Jennings Hettinger
Add your answer:
Earn +20 pts
How you use the least common multiple?
When adding or subtracting unlike fractions, the LCM process is used to find the least common denominator.
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
What is the least common multiple used for?
It helps with the adding and subtracting of fractions.
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 is least common denominator of 14 and 17?
A single number cannot have anything in common. To find a lowest common denominator, you need to be adding or subtracting at least two fractions.
When adding or subtracting fractions you must get a?
A Common Denominator
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.
How is subtracting fractions like adding fractions?
You need a common denominator for both.
What is always needed when adding and subtracting fractions?
a common denominator
Does division need a common denominator?
No, You only need a common denominator when adding or subtracting fractions.
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.
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 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 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.
Adding and subtracting unlike fractions steps?
first u find a common denominator
