0
Why do fractions need a common denominator for adding or subtracting them?
Wiki User
∙ 7y ago
- They just do. It is the only way to add/subtract them. like if you have 1/2 a cookie and 1/4 a cookie, you cant just add the numerator and denominator. you make 1/2 2/4 and show that you have 3/4 cookie
Wiki User
∙ 7y ago
Add your answer:
Earn +20 pts
Adding and subtracting unlike fractions steps?
first u find a common denominator
Do you need a common denominator when subtracting fractions?
yes you should use a common denominator when subtracting with fractions, it makes it much easier.
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
What is the rule for adding fractions?
They have to have a common denominator
What is halfway between 1 over 4 and 1 over 2?
Just add the fractions, and divide by 2. Before adding, you have to convert to a common denominator; in this case, you can use "4" as the common denominator.Just add the fractions, and divide by 2. Before adding, you have to convert to a common denominator; in this case, you can use "4" as the common denominator.Just add the fractions, and divide by 2. Before adding, you have to convert to a common denominator; in this case, you can use "4" as the common denominator.Just add the fractions, and divide by 2. Before adding, you have to convert to a common denominator; in this case, you can use "4" as the common denominator.
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
