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You don't need a common denominator to multiply or divide fractions.
To multiply fractions, multiply the numerators and the denominators, e.g.:
1/2 x 3/5 = (1/3) / (2/5) = 3/10
To divide fractions, multiply the first fraction with the reciprocal of the second.
1/2 divided by 5/3 is the same as 1/2 times 3/5.
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How do you know when to turn a division problem into a fraction?
When the numerator and denominator of the division do not have a common factor.
When dividing fractions do need a common denominator?
No. Common denominators are needed for addition and subtraction, not multiplication or division.
What is the common denominator of 56 and 7?
A common denominator is 7.A common denominator is 7.A common denominator is 7.A common denominator is 7.
What is the greatest common denominator of 24 and 36?
There can be no greatest common denominator. For supose x is the greatest common denominator. ie 24 divides x and 36 divides x. Then 2x is a common denominator and 2x > x so 2x is a greater common denominator than the greatest common denominator. That contradiction implies that there is no greatest common denominator.
The bottom number in division is called what?
Denominator
