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If you are adding fractions, finding the least common multiple makes the arithmetic easier. For instance if you add 3/4, 5/6 and 1/12 the LCM is 12. In the worst case, you might multiply 4x6x12 to get 288, and have to change each fraction to 288ths!
Wiki User
∙ 9y ago
Wiki User
∙ 7y agoIt is not.
It is necessary to be able to find a common multiple of a set of numbers to add or subtract them. However, it is not necessary for that to be the least common multiple (LCM). The LCM will mean that the numbers in the calculations are as small as they can be but, if you don't mind working with larger numbers, it does not matter if it is not LCM.
Wiki User
∙ 11y agoSo that you will be able to add and subtract fractions accurately.
Wiki User
∙ 9y agoThe question makes no sense without some context. Finding the least common multiple will not help you, in any way, to write a history report or to ride a bike.
Wiki User
∙ 8y agoIt will help when adding or subtraction unlike fractions.
Wiki User
∙ 7y agoThat technique is essential for finding common denominators when you are adding or subtracting unlike fractions.
Wiki User
∙ 9y agoIt is mainly to keep the numbers t a manageable size. Almost anything that you can do with the LCM you can do with any other common multiple.
Wiki User
∙ 8y agoAdding and subtracting unlike fractions.
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Find the least common multiple of 72 and 24?
The least common multiple of 72 and 24 is 72.
Find the least common multiple of 20 5 and 4?
The least common multiple of 20 5 and 4 is equal to 20.
How do you find least common multiples of 16 and 3?
The Least Common Multiple (LCM) of3, 16, and 20 is 240.
What is the least common multiple 2510?
You need at least two numbers to find an LCM.
What is the LCM of 32?
You cannot find the least common multiple of a single number. The least common multiple of two numbers is the smallest number (not zero) that is a multiple of both
What is the least common multiple of 108?
You need at least to numbers to find a least common multiple.
What is the least common multiple of 5625?
You need at least two numbers to find a least common multiple.
What is the least common multiple of lcd?
You need at least two numbers to find a least common multiple.
How do you find the most common multiple?
There is no "most common multiple". To find all common multiples, you start by finding the least common multiple. All other common multiples are multiples of this least common multiple.
Find the least common multiple of 5 and 15?
The Least Common Multiple (LCM) is 15.
What is the least common multiple of 30?
You need at least two numbers to find a common multiple.
What are the steps in finding the least common multiple of two numbers?
to find the least common multiple of two numbers you must list the factors then you can find out their least common multiple of the two numbers
Find the least common multiple of 8 and 15?
The Least Common Multiple of 8, 15 is 120.
What is the least common multiple of 84?
You need two or more numbers to find a Least Common Multiple for.
Find least common multiple 90 and 60?
The Least Common Multiple of 90, 60 is 180.
Find the least common multiple of 4 and 14?
The least common multiple of 4 and 14 is 28.
Find the least common multiple of 36 and 30?
The least common multiple of 36 and 30 is 180.
