Q: Do you always have to find common denominator when working with fractions?

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Common denominator

a common denominator

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

Not always. If one denominator is a multiple of the other, the LCD will be the larger one.

no u dnt need to have a common denominator.. Just multiply both the denominator and numerator of the fractions u are working on and u will arrive at the answers

Just multiply the two denominators of your fractions, the answer you get is a common denominator.

The first step, to add, subtract, or compare fractions, is always to convert the fractions to equivalent fractions, that all have the same denominator. You can use one of several techniques to get the LEAST common denominator, or simply multiply the two denominators to get a common denominator (which in this case may, or may not, be the smallest common denominator).

The least common denominator is the least common multiple of the denominators of the fractions.

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

By finding the lowest common denominator of the fractions.

Addition or subtraction of fractions require "like" fractions: that is, fractions with the same denominator.

To compare fractions, convert them to a common denominator - in this case, a denominator of 8 will work.To compare fractions, convert them to a common denominator - in this case, a denominator of 8 will work.To compare fractions, convert them to a common denominator - in this case, a denominator of 8 will work.To compare fractions, convert them to a common denominator - in this case, a denominator of 8 will work.

To subtract fractions with like denominators, subtract the numerators , and write the difference over the denominator. Example : Find 45−25 . Since the denominators are the same, subtract the numerators.

To compare two fractions, convert them to a common denominator.To compare two fractions, convert them to a common denominator.To compare two fractions, convert them to a common denominator.To compare two fractions, convert them to a common denominator.

When comparing fractions you must find a common denominator; by finding the least common denominator it will keep the numbers (numerators and denominator) smaller .

Only if you have just two fractions.

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

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.

You Ned to find a larger common denominator or multiply the denominators to gain a common denominator.

Fractions with the same denominator are referred to as fractions having a common denominator.

Having a common denominator makes it easier to add or subtract fractions. You can also convert fractions to decimals and then do the addition or subtraction but that is really the same thing as having a common denominator of 10. 100. 1000. etc. Without a common denominator, you would have to mentally make adjustments for the values of fractions. Of course, that is really establishing a common denominator in your head.

yes you should use a common denominator when subtracting with fractions, it makes it much easier.

A "common denominator"

The least common denominator of two fractions is the least common multiple of the two denominators.

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