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Q: What is the use of LCM?

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you use the lcm (least common multiple).

Gcf you use when you are finding the greatest factor for the numbers. Lcm you use when you are finding the smallest multiple in the numbers factors

You can, but there are more efficient ways to find the LCM.

The LCM of 8 and 108 is 216, no matter what you use.

We use the LCM to find the least common denominator of unlike fractions.

Use the GCF to reduce equivalent fractions. Use the LCM to add and subtract unlike fractions.

To find the GCF and the LCM you have to first at least try to use prime factorization. So use factor trees. Or for the LCM find th least common multiples of the number.

You would use it when adding fractions.

The HCF helps when reducing fractions. The LCM helps when adding or subtracting fractions.

a and b have no common prime factors. Their LCM is their product.

It doesn't matter which method you use. You still need at least two numbers to find an LCM. There is no LCM of 20.

To add fractions.

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1440 use a calculator

Yes

To answer GCF and LCM questions.

The GCF is 7.The LCM is 70.

You need at least two numbers to find an LCM no matter what you use.

They do not necessarily use them every day.

Use the GCF to reduce fractions. Use the LCM to add and subtract unlike fractions. Carpenters work with fractions a lot.

Use the LCM for their coefficients.Use each vriable with the LARGEST exponent in each term.Ex: Find the LCM of 15 x2y5 and 20 x3y4LCM of 15 and 20 is 60, LCM of x2 and 20 x3 is x3 , LCM of y5 and y4 is y5So the LCM is 60 x3y5

No matter what method you use, you need at least two numbers to find an LCM.

weighing scales

When you are adding or subtracting fractions.

Least common multiples do not use zero as a multiple, as the LCM for any number and zero is zero.