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if you find the prime factors it makes the number easier to multiple. first make prime factor trees for each of the numbers. i did 18x15.

18 could have 3, 3 and 2 and 15 could have 3 and 5. then the sum could be: 5x2=10x3=30x3=90x3=270

hope this helps. if you are not sure, look up prime factor trees first.

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βˆ™ 12y ago
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βˆ™ 14y ago

there is no whole number who's a multiple of 15 and a factor of 12. the factors of 12 are 3,4,6,2, The smallest multiple of 15 is 15, so it's not possible.

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βˆ™ 14y ago

The factors of 12 are 1, 2, 3, 4, 6, and 12.

The factors of 15 are 1, 3, 5, and 15.

The common factors of 12 and 15 are the numbers that are factors of both, which are 1 and 3.

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βˆ™ 12y ago

Factors: 1,2,3,4,6,12

Multiples: 12, 24, 36 and so on.

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βˆ™ 10y ago

The prime factors are:

12 = 2 * 2 *3

15 = 3 * 5

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βˆ™ 6y ago

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Q: What are factors and multiples of 12?
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How are factors and multiples of a number are related?

Factors of the number will also be factors of the number's multiples. Multiples of the number will also be multiples of the number's factors.


What number has the same multiples as 12?

No number has the exact same multiples. Factors and multiples of 12 will have some of the same multiples.


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Factors that are multiples of 3 and factors of 24? factors of 24 are 1, 2, 3, 4, 6, 8, 12, 24. only 3, 6, 12, and 24 are multiples of 3.


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4, 12 and 36 are the multiples of 4 that are also factors of 36


What are the factors and multiples of 12?

Factors: 1, 2, 3, 4, 6, 12 Multiples: 12, 24, 36, 48, 60, 72, 84, 96 and so on.


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