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To find the LCM (Lowest Common Multiple) of many numbers, find the prime factors of each number. Write down each prime factor once. If it occurs in more than one of the numbers, you should write it down once, but if it occurs more than once in a number, write it down that many times. Once you have found all the prime factors like this, you can multiply them all together to form the LCM.
ExampleWhat is the LCM of 36, 16 and 27?
- 36 = 2x2x3x3
- 16 = 2x2x2x2
- 27 = 3x3x3
- The prime factor 2 occurs the most in 16. Here it occurs 4 times.
- The prime factor 3 occurs most in 27. Here it occurs 3 times.
- Therefore, the LCM is 2x2x2x2x3x3x3 = 432
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What steps do you take to multi digit whole numbers?
You need to find the LCM first :)
Can any of the steps in solving a rational equation be eliminated?
Each method of doing something has its own steps. Whether or not any steps can be eliminated will depend on how much [unnecessary] detail the steps go into.
What is the LCM of 540 and 315?
Steps to find out LCM of two numbers(a & b):1- Find HCF of a & b.2- Multiply a and b.3- Divide the result of step 2 by HCF. The result is LCM.1- In order to find out HCF of 540 and 315 we shall use the method of prime factorization.Prime factorization of 540 = 2x2x3x3x3x5Prime factorization of 315 = 3x3x5x7HCF(540, 315) = 3x3x5 = 45.2- Product of 540 and 315.540 x 315 = 170100.3- LCM(540, 315) = 170100/45 = 3780.
What method would you use to find the LCM of 4 numbers?
Just put all of the multiple out to 10 multiples then check if any of them are common. then go out to 20 multiples and check if any of them are common. keep doing this until you find a LCM
What are the steps of how to multiply a fraction?
1st choice of answer :by doing cross multipliying. or by making your denominator same
