answersLogoWhite

0

To get the correct answer. If you look at a problem like 1/3 - 1/4, you might not be able to guess the answer is 1/12 unless you know that 1/3 = 4/12 and 1/4 = 3/12

User Avatar

Wiki User

12y ago

What else can I help you with?

Related Questions

Do you need a common denominator for all fractions before doing the order of operations?

You DO need a common denominator to add, subtract, or compare fractions. You DO NOT need a common denominator to multiply or divide fractions.


How do you get the common denominator for dividing fractions?

You don't need a common denominator to divide fractions.


Do you need common denominators when subtracting fractions?

Yes. You need common denominators if you want to:Add fractionsSubtract fractionsCompare fractions ("which is larger?")You do not need common denominators to multiply or divide fractions. Thus, in the case of fractions, multiplication and division is actually easier than addition and subtraction.


Do you need a common denominator for dividing fractions?

No only when adding or subtracting fractions a common denominator is needed


How is subtracting fractions like adding fractions?

You need a common denominator for both.


Do you need a common denomaitor when you multiply fractions?

No.


Do you need a common denominator when multyplying fractions?

No.


Do you need a common denominator to multiply fractions?

No.


Do you need a common denominator multiplying fractions?

No.


Does division need a common denominator?

No, You only need a common denominator when adding or subtracting fractions.


When do you need to use the greatest common factor?

When you need to reduce fractions.


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.