Factors & GCF, Prime Factorization Practice

GCF of 12 and 24

12

GCF of 18 and 15

3

GCF of 9 and 45

9

Numbers with more than 2 factors

Composite Numbers

Common Factor

a factor shared by 2 or more numbers

Factor

a number that is multiplied with another to get a product

Greatest Common Factor

the greatest shared factor of 2 or more numbers

Least Common Multiple

the least shared multiple of 2 or more numbers

Prime Factorization

writing a number as a product of its prime factors

11

1, 11 (prime)

13

1, 13 (prime)

factors of 2

1, 2

factors of 12

1, 2, 3, 4, 6, 12

factors of 9

1, 3, 9

GCF of 10 and 70

10

3 x 5

Prime Factorization of 15

5 x 5

Prime Factorization of 25

2 x 2 x 2 x 2 x 2

Prime Factorization of 32

5 x 7

Prime Factorization of 35

2 x 2 x 3 x 3

Prime Factorization of 36

2 x 3 x 7

Prime Factorization of 42

2 x 2 x 2 x 7

Prime Factorization of 56

3 x 5 x 5

Prime Factorization of 75

2 x 2 x 2

Prime Factorization of 8

Numbers with only 2 factors; 1 and itself 2,3,5,7,11,13,17,19....

Prime Numbers