GCF & LCM

Factors

100

List all of the factors of 20.

1, 2, 4, 5, 10, and 20

200

List all of the common factors of 12 and 20.

1, 2, and 4

300

List all of the factors of 42.

1, 2, 3, 6, 7, 14, 21, 42

400

List all of the factors of 52.

1, 2, 4, 13, 26, and 52

500

List all of the common factors of 24 and 36.

1, 2, 3, 4, 6, 12

Multiples

100

List the first 6 multiples of 8 

8, 16, 24, 32, 40, 48

200

List the first 6 multiples of 12.

12, 24, 36, 48, 60, 72

300

List the first 10 multiples of 8

8, 16, 24, 32, 40, 48, 56, 64, 72, 80

400

List 4 multiples of 7 greater than 10 but less than 50.

14, 21, 28, 35, 42, 49

500

What is the lowest common multiple of 12 and 18. 

36 

Greatest Common Factor

100

What is the greatest common factor of 12 and 15

3

200

What is the greatest common factor of 24 and 20?

4

300

What is the greatest factor of 16 and 36?

4

400

What is the great common factor of 50, 35, and 15?

5

500

What is the greatest common factor of 64 and 80?

16

Least Common Multiple

100

What is the least common multiple of 3 and 7?

21

200

What is the least common multiple of 4 and 9?

36

300

What is the least common multiple of 2, 3, and 5?

30

400

What is the least common multiple of 20 and 12?

60

500

What is the least common multiple of 21 and 24?

168

Word Problems

100

Use an equation to represent that 2 is less than 6. 

2<6

200

True or false, a fraction with a numerator larger than the denominator is called an improper fraction  

TRUE

300

True or false, when adding and subtracting fractions, the denominator needs to be the same. 

TRUE

400

Amy has 72 sweets in a bag. She keeps ¼ of them for herself and shares the rest with friends. How many sweets will she give to her friends?

54

500

Of 100 children in Grades 7 and 8, three-quarters have pets; 40 children have a dog, and 18 children have a cat. How many children have other kinds of pets?

17