Keyword Analysis & Research: common denominator

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What does it mean to get a common denominator?

common denominator. n. 1. (Mathematics) an integer exactly divisible by each denominator of a group of fractions: , , and have a common denominator of 12.

Why do we need common denominators?

Therefore, the reason fractions need a common denominator before adding or subtracting is so that the number of pieces you are adding/subtracting are all the same size. By the way, the numerator of a fraction just tells you how many pieces you have of that size.

What does the common denominator mean?

In mathematics, a common denominator is a number which can be divided exactly by all the denominators in a group of fractions. 2. countable noun. A common denominator is a characteristic or attitude that is shared by all members of a group of people.

What is the GCF of 12 and 75?

The gcf of 12 and 75 can be obtained like this: The factors of 12 are 12, 6, 4, 3, 2, 1. The factors of 75 are 75, 25, 15, 5, 3, 1. The common factors of 12 and 75 are 3, 1, intersecting the two sets above. In the intersection factors of 12 ∩ factors of 75 the greatest element is 3. Therefore, the greatest common factor of 12 and 75 is 3.