0
Why do fractions need to have a common denominator before subtracting or adding?
Wiki User
∙ 7y ago
Because if there's no common denominator it'll be hard to simplify. And will cause you to get a headache.
Wiki User
∙ 7y ago
Add your answer:
Earn +20 pts
Before adding or subtracting Why are fractions turned into like fractions?
They have to have the same 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.
What are the Rules of adding and subtracting dissimilar fractions?
If their denominators are different then find their lowest common denominator by means of their lowest common multiple remembering to adjust their numerators accordingly before adding or subtracting.
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 do subtract two fractions with different denominator?
First find the lowest common denominator and then adjust the fractions accordingly before subtracting the numerators
Before adding or subtracting Why are fractions turned into like fractions?
They have to have the same 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.
Why do fractions need a common denominator before you add or subtract?
Because the answers will be wrong when adding or subtracting them if they don't have a common denominator.
What are the Rules of adding and subtracting dissimilar fractions?
If their denominators are different then find their lowest common denominator by means of their lowest common multiple remembering to adjust their numerators accordingly before adding or subtracting.
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.
What do you do to a fraction before adding subtracting or dividing?
When adding or subtracting, convert all fractions in the question to a common denominator/ 1/2 + 1/4 - 1/3 = 6/12 + 3/12 - 4/12 = 5/12
How do subtract two fractions with different denominator?
First find the lowest common denominator and then adjust the fractions accordingly before subtracting the numerators
What must you do first before adding or subtracting unlike fractions?
you must make the fractions equivalent and with the same denomenator
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.
What must a mathematician do before adding two unlike fractions?
Find the lowest common denominator
How do you get a common denominator for subtracting fractions?
you gotta find tyhe width of they nile river and substiture into the cosine rule before dividing by the velocity of the amazon rainforest
What do you have to do first before adding and subtracting mixed numbers?
look at the denominator see if it is the same as the other denominator or see if it is the same number at the bottom of each number.
