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No.

No.

No you do not.

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

Common denominators are found by multiplying one denominator with another. Since you only have one here, you need another.

no

You can always find a common denominator by multiplying the denominators together.

only when adding and subtracting

Note: numerator is the top part of the fraction, denominator is the bottom part. 1) Find a common denominator. It may be the least common denominator, but it need not be; just multiplying the denominators also gives you a common denominator, not necessarily the smallest one. 2) Convert each fraction so that it has this common denominator. This means multiplying numerator and denominator by the same number.

The common denominator for a set of numbers is identified by simply multiplying the numbers together. This will not be the least common denominator, but that is not what the question is about.

No.

When you're dividing fractions ... or multiplying thrm ... they don't need to have the same denominator.

That's a common denominator.

YES.

Because it is not how multiplication or division are defined.

you don't need a CD for multiplication. only division.you do need a common denominator duhhh* * * * *No, you do not need a common denominator for multiplication or division. But you do need it for addition or sutraction.no you do not. You don't need one in division either. A common denom is only used in addition and subtraction.a equation for multiplying would beA a A*a-- * -- = -----B b B*bDividing is similar, just multiply by the inverse.A a A*b-- / -- = -----B b B*aAdding and subtracting are a little more complicated. Here is a formula to make finding the common denominator easy.A a (A*b)+(a*B)-- + -- = ---------------B b B*bA a (A*b)-(a*B)-- - -- = ---------------B b B*b

You can find a common denominator of any set of denominators by multiplying them together. That result will not necessarily be the lowest common denominator. Example: 1/6 and 1/9 6 x 9 = 54 and 54 is a common denominator of 6 and 9, but the LCD is 18.

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

When cross multiplying, finding the product of the means and extremes, you are technically getting a common denominator that reduces out.

no. you can multiply straight across in fraction multiplication

Multiplying fractions is quite different from adding them. You just multiply the numberators and the denominators separately. You can find the common denominator if you like, but in the end (after simplifying), you'll get the same result, and the additional work of finding the common denominator and converting the fractions turns out to be unnecessary. Try it out for some 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.

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

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

The way that you can find the least common denominator is by first multiplying the 2 bottom numbers and whatever the product is that is your common denominator. to find the smallest one, you have to keep dividing it till it is in counting order or there is an odd number.