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Q: How do you know when to use common factors or common multiples to solve a problem?

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becasu multiples are the same thing as factors.

The hcf is useful in reducing fractions to their lowest terms and the lcm is useful in finding the lowest common denominator of fractions that have different denominators that need to be added or subtracted.

It can't be a factor, common or otherwise, because factors can't be larger than the numbers they supposedly come from. 3360 is a multiple of 16 and 30, but it can't be a common multiple in this problem because it is not a multiple of 36.

Example: 30 and 42Factor them.2 x 3 x 5 = 302 x 3 x 7 = 42Select the common factors.2 x 3 = 6, the GCF

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becasu multiples are the same thing as factors.

The answer will depend on the problem!

yes because it helps me figure out all the prime numbers!;)

That seems like a fairly easy choice...

Factors,are the number that can be multiply and multiplies are the operation to solve a problem and to factorize numbers...

This cannot be answered because the common multiples of any two or more numbers are infinite.

you list all the multiples of each number until you come to the first number that is in all columns

There are many problems involving factors and the question needs to be more specific.

help me out friends to solve this problem.

21 and 84

You make make a factor tree to solve this:24 = 6 * 4 = 3 * 2 * 2 * 2Therefore, the factors of 24 which are multiples of 3 are 3, and 3*2 = 6, and 3*2*2 = 12

the cast of finding nemo is going to have a party there will be 80 cookies and 20 juice boxes. how many of each will each cast member get?

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