12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144 and 15, 30, 45, 60, 75, 90, 105, 120, 135, 150, 165, 180.
The factors of 12 are 1, 2, 3, 4, 6, and 12 The factors of 15 are 1, 3, 5, and 15
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.
The factors of 12 are: 1, 2, 3, 4, 6, 12 The factors of 15 are: 1, 3, 5, 15 The factors of 35 are: 1, 5, 7, 35
Factors for 12 are: 1, 2, 3, 4, 6, 12 Factors for 15 are: 1, 3, 5, 15 Factors for 24 are: 1, 2, 3, 4, 6, 8, 12, 24
The factors of 12 are: 1, 2, 3, 4, 6, 12 The factors of 15 are: 1, 3, 5, 15 Therefor the greatest common factor of 12 and 15 is 3. :)
The numbers that go into both 12 and 15 are their common factors. The factors of 12 are 1, 2, 3, 4, 6, and 12, while the factors of 15 are 1, 3, 5, and 15. The common factors between the two sets are 1 and 3. Therefore, the numbers that go into both 12 and 15 are 1 and 3.
Common factors of 12, 15, and 18 are: 1 and 3.
First add 15 and 45. Then find the factors. 15+45=60 The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, and 30.
Factors of 12: 1, 2, 3, 4, 6, 12 Factors of 15: 1, 3, 5, 15 Factors of 35: 1, 5, 7, 35 GCF (12, 15, 35) = 1
The common factors of 9, 12, and 15 are 1 and 3. The GCF is 3.
The factors of 12 are: 1, 2, 3, 4, 6, 12The factors of 15 are: 1, 3, 5, 15The common factors are: 1, 3
The GCF of 12 and 15 is 3. factors of 12: 1, 2, 3, 4, 6 and 12. factors of 15: 1, 3, 5, and 15. common factors 1 and 3. Since 3 > 1, 3 is the Greatest Common Factor.