Example: 30 and 42
Factor them.
2 x 3 x 5 = 30
2 x 3 x 7 = 42
Select the common factors.
2 x 3 = 6, the GCF
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There are ways to find the GCF of set of numers; by the factor tree method and by the decomposition method. I know that these methods are the easy ways to get your GCF, but there is much, much more easier; it is the Euclidean Algorithm Method, you just divide the larger number in the 2 given numbers and divide the remainder to the dividend until there is no remainder. then the answer will be the first reainder. ENJOY SOLVING PROBLEMS.! and thanks for reading, I just want to share to you the method that I just discovered.! :D
You need at least two numbers to find a GCF. The GCF of 18 and 24 is 6.
You need at least two numbers to find a GCF.
Find the factor pairs of each number. The greatest factor in common is the GCF. A hint, the definition of a prime number is a number with only two factors: 1 and itself.
The division ladder is a method used to find the greatest common factor (GCF) of two numbers by listing the factors of each number. To find the GCF of 82, you would start by factoring the number 82. The factors of 82 are 1, 2, 41, and 82. Therefore, the GCF of 82 is 1.