Primes, GCF, and LCM

What is the greatest common factor of 25 and 32?

Least Common Multiple of 40 and 15

• 60

• 80

• 120

• 240

Prime factorization of 565

• 113 x 5

• 565 x 1

• 37 x 15

• 38 x 13

Least common multiple of 8, 9, and 12

52 and 36 are coprimes: True or False

• True

• False

Find the greatest common factor of 8, 18, and 28

• 2

• 4

• 1

• 8

Find the highest common factor of 15, 5, 45, and 95

• 3

• 1

• 15

• 5

Find the lowest whole number that when divided by both 30 and 36 leaves a remainder of 20

The GCF and LCM of two numbers are 8 and 48. If one of the numbers is 24, what is the other number

• 16

• 12

Find the least whole number that is exactly divisible by 7, 21, and 49.