1,2,7,14
1,2,4,5,10,20
The factors of 14 are: 1, 2, 7, 14 The factors of 16 are: 1, 2, 4, 8, 16 The factors of 20 are: 1, 2, 4, 5, 10, 20 The factors of 40 are: 1, 2, 4, 5, 8, 10, 20, 40
The factors of 14 are: 1, 2, 7, 14 The factors of 20 are: 1, 2, 4, 5, 10, 20
The greatest common factor of 14 and 20 is 2.One way to determine the greatest common factor is to find all the factors of the numbers and compare them.The factors of 14 are 1, 2, 7, and 14.The factors of 20 are 1, 2, 4, 5, 10, and 20.The common factors are 1 and 2. Therefore, the greatest common factor is 2.The greatest common factor can also be calculated by identifying the common prime factors and multiplying them together.The prime factors of 14 are 2 and 7.The prime factors of 20 are 2, 2, and 5.The prime factors in common are a single 2, so the greatest common factor is 2. Factors of 14: 1 2 7 14 Factors of 20: 1 2 4 5 10 20 The GCF of 14 and 20 is 2The GCF is 2.The GCF is 2.
34
1 and 2
10 and 4
560 14 * 40 20* 28 8* 70
1, 2, 7, 14 1, 2, 4, 5, 10, 20
The factors of 20 are 1, 2, 4, 5, 10, and 20 The factors of 28 are 1, 2, 4, 7, 14, and 28. Common factors of 20 and 28: 1, 2, and 4.
The factors of 20 are: 1, 2, 4, 5, 10, 20 The factors of 56 are: 1, 2, 4, 7, 8, 14, 28, 56
The easiest way to do this is to split the numbers down into their prime factors: 14 = 2x7 20 = 2x2x5 The next step is to spot any common prime factors. In this case both numbers have a 2 as a prime factor. Therefore, the HCF of 14 and 20 is 2.
14