Common factors of 18 and 30 are: 1, 2, 3, and 6.
-- List all factors of the first number. -- List all factors of the second number. -- If there are more than two numbers, list all factors of each one. -- Find the set of factors that are on every list. -- Find the greatest factor in the set.
1 2 3 5 6 10 15 30.
When you are finding common factors, one method is to list the factors.
All of them. Different numbers have different numbers of factors.
2,3,5
Factors are numbers you can multiply together to get another number. 30: 1, 2, 3, 5, 6, 10, 15, 30
2 x 3 x 5
2, 3, 5, 6, 10, 15
-- List all the factors of the first number.-- List all the factors of the second number.-- If there are more than two numbers, then list all the factors of each of the rest of them.-- Inspect the lists, to see what factors show up on every list.-- Pick the greatest factor that shows up on every list.
1, 2, 3, 5, 6, 10, 15, 30
-- List all the factors of 15. -- List all the factors of 30. -- Spot the group of numbers that are on both lists. -- The biggest one of those is the GCF. It should be close to 15.
All Factors of 150:1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150
All non-zero numbers have factors. These can be written down in a list. That would be known as a list of factors.
To find the common factors of 30 and 20, we first list the factors of each number. The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30. The factors of 20 are 1, 2, 4, 5, 10, and 20. The factors that are common to both numbers are 1, 2, 5, and 10.
Common factors of 18 and 30 are: 1, 2, 3, and 6.
find all factors of 72