LCM and GCF

Find the Greatest Common Factor (GCF) of 60 and 24

• 6

• 12

• 24

• 2

Find the Greatest Common Factor (GCF) of 20 and 24

• 5

• 6

• 4

• 2

Find the Least Common Multiple (LCM) of 3 and 12

• 3

• 6

• 4

• 12

Find the Least Common Multiple (LCM) of 5 and 12

• 60

• 12

• 2

• 6

There are 66 boys and 33 girls. The choir teacher plans to arrange the students in equal rows. Only girls or boys will be in each row (no mixing of girls and boys in the same row). What is the greatest number of students that could be in each row?

• 2

• 11

• 66

• 33

Rewrite the expression below using the distributive property and GCF.

16 + 56

Which expression(s) are equivalent to 12 + 24

• 12 (1 + 2)

• 2 (6 + 22)

• 4 (3 + 6)

• 3 (4 + 8)

Harry has two pieces of wood. One is 64 inches and the other is 48 inches. He wants to cut both pieces into smaller pieces of the same length. What is the longest possible length he can cut and not have any wood leftover?

• 4 inches

• 8 inches

• 32 inches

• 16 inches

Evaluate 8(12 + 11) using the distributive property

Two clocks are turned on at the same time. One clock chimes every 11 minutes. The other clock chimes every 7 minutes. In how many minutes will they chime together?

• 77 minutes

• 1 minute

• 11 minutes

• 35 minutes