Factors and Multiples

List all the factors of 50

• 1,2,3,4,10,50

• 1,2,5,10,25,50

• 1,2,5,50

• 1,2,3,10,50

Test the number 12,330 for divisibility by 2,3,4,5,6,9 and 10

• 2,3, and 5 only

• 2 and 10 only

• 2,3,5,6,9, and 10

• 2,3,4,5,6,9, and 10

Select the list of only prime numbers

• 2,7,19,29

• 1,3,5,7

• 1,12,15,19

• 2,4,6,9

Select the list of only composite numbers

• 4,6,25,31

• 5,10,15,20

• 9,25,30,35

• 12,29,30,35

What is the prime factorization of 63?

• 3² x 7

• 5 x 7

• 9 x 7

• 63 x 1

What is the greatest common factor of 10 and 15?

• 10

• 15

• 5

• 1

What is the least common multiple of 4 and 25

• 4

• 25

• 40

• 100

What is the prime factorization of 100?

• 2²x5²

• 3²x2

• 5x2

• 50x2

List all the factors of 18

• 1,2,3,4,18

• 1,2,3,6,9,18

• 1,2,4,5,6,7,18

• 1,18

What is the least common multiple of 9 and 12?

• 9

• 12

• 36

• 80