Factors, Prime Factorization, Equivalent Fractions & Decimals, GCF & LCM

Factors of a Number

100

List all of the factors of 12.

1,2,3,4,6,12

200

List all of the factors of 75.

1,3,5,15,25,75

300

List all of the factors of 24.

1,2,3,4,6,8,12,24

400

List all of the factors of 67.

1,67

500

What is a prime number and what is a composite number?

A prime number has only 2 factors, the number 1 and the number itself.  A composite number has more than 2 factors.

GCF

100

Find the greatest common factor  of 16 and 24.

8

200

Find the greatest common factor  of 18, 30 and 24.

6

300

Find the greatest common factor  of 28 and 42.

14

400

Find the greatest common factor  of 10 and 35.

5

500

Find the greatest common factor  of 16, 40 and 88.

8

LCM

100

Find the least common multiple of 3 and 4.

12

200

Find the least common multiple of 4, 5 and 8.

40

300

Find the least common multiple of 6 and 20.

60

400

Find the least common multiple of 3, 6 and 9.

18

500

Find the least common multiple of 2, 3, 6 and 8.

24

Prime Factorization

100

What is the prime factorization for 48?

2⁴  x 3 

200

What is the prime factorization for 20?

2² x 5

300

What is the prime factorization for 49?

7²

400

What is the prime factorization for 140?

2² x 5 x 7

500

What is the prime factorization for 10?

2 x 5 

Equivalent Fractions

100

4/8

1/2

200

16/24

2/3

300

4/6

2/3

400

14/16

7/8

500

6/8

3/4