0
Not necessarily. For example, if you are asked "what is 1/2 + 1/5", you could answer it by saying "1/2 equals 0.5, and 1/5 = 0.2. Therefore, 1/2 + 1/5 = 0.5 + 0.2 = 0.7". If you want to keep them in the form of a fraction though, then yes, common denominators are required. One could in fact argue that this is exactly what you did when converting them to decimal. In that case, you gave them a common denominator of ten. If you look at it that way, then the answer is yes, a common denominator must be found.
What else can I help you with?
How do you add improper fractions if the denominator can't multiply into the other denominator?
You Ned to find a larger common denominator or multiply the denominators to gain a common denominator.
How do you do perimeter with fractions?
just find a common denominator and add like you regularly would with fractions.
What common denominator would you use to add fractions?
There isn't a universal answer to all problems. What you should try to do is find the lowest common denominator between the fractions you are adding.
How can you add fractions with different denominator?
To add fractions with different denominators, first find a common denominator, which is typically the least common multiple (LCM) of the two denominators. Next, convert each fraction to an equivalent fraction with this common denominator by multiplying the numerator and denominator by the necessary factors. Once both fractions have the same denominator, add their numerators together while keeping the common denominator, and simplify the result if possible.
How do you add three fractions with unlike denominators?
-- Find a common denominator. (It will be a number of which all three denominators are factors. The best choice is their least common multiple.) -- Change the fractions to their equivalents with the common denominator. -- Then add their numerators to get the numerator of their sum.
When you add fractions do you find the common denominator?
Yes you do.
How do you add or subtract dissimilar fractions?
You first convert them to similar fractions, i.e., to fractions that have the same denominator.* Step one: find a common denominator.* Step two: convert both fractions to equivalent fractions that have that denominator.
How do you add nonequivalent fractions?
Find a common denominator, (best is the LCM) Convert both fractions into a form with a common denominator Add numerators, keep sam common denom. Reduce.
Adding unlike fractions?
If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add and simplify.
Addition of fractions?
find a common denominator. Then just add across.
When you add fractions do you have to find a common denominator?
Only if the denominators are different.
How do you add improper fractions if the denominator can't multiply into the other denominator?
You Ned to find a larger common denominator or multiply the denominators to gain a common denominator.
How do you do perimeter with fractions?
just find a common denominator and add like you regularly would with fractions.
How do you add multiple mixed fractions?
Find a common denominator, add the numerators, simplify if possible.
What common denominator would you use to add fractions?
There isn't a universal answer to all problems. What you should try to do is find the lowest common denominator between the fractions you are adding.
How can you add fractions with different denominator?
To add fractions with different denominators, first find a common denominator, which is typically the least common multiple (LCM) of the two denominators. Next, convert each fraction to an equivalent fraction with this common denominator by multiplying the numerator and denominator by the necessary factors. Once both fractions have the same denominator, add their numerators together while keeping the common denominator, and simplify the result if possible.
Why do you need a common denominator?
Common Denominator means that the denominators in two (or more) fractions are common, or the same. The common denominator is important because before you can add or subtract fractions, the fractions need to have a common denominator.Sometimes fractions have different denominators, like 2/3 and 3/4. If you want to add or subtract them, they need to have the same denominator. In order to do that, you find a common denominator which is the same thing as a common multiple, only with denominators.
