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Calculate the Greatest Common Factor or GCF of 450

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The instructions to find the GCF of 450 are the next:

1. Decompose all numbers into prime factors

4502
2253
753
255
55
1

2. Write all numbers as the product of its prime factors

Prime factors of 450=2 . 32 . 52

3. Choose the common prime factors with the lowest exponent

Common prime factors: 2 , 3 , 5

Common prime factors with the lowest exponent: 21, 32, 52

4. Calculate the Greatest Common Factor or GCF

Remember, to find the GCF of several numbers you must multiply the common prime factors with the lowest exponent.

GCF = 21. 32. 52 = 450


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