Answer:
1. 4
2. 6
3. For smaller numbers you can simply look at the factors or multiples for each number and find the greatest common multiple of them. For 35 and 56 those factors look like this: Factors for 35: 1, 5, 7, and 35. Factors for 56: 1, 2, 4, 7, 8, 14, 28, and 56.
4. The first step to find the gcf of 16 and 28 is to list the factors of each number. The factors of 16 are 1, 2, 4, 8 and 16. The factors of 28 are 1, 2, 4, 7, 14 and 28. So, the Greatest Common Factor for these numbers is 4 because it divides all them without a remainder.
5. The factors of 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60. The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72. The common factors of both numbers are 1, 2, 3, 4, 6, and 12. Which means that 12 is the greatest common factors
