Unit 1 End Quiz- GCF/LCM

What is the prime factorization of 56 in exponential notation?

What is the greatest common factor of 16 and 48?

• 2

• 48

• 8

• 16

Maya waters the garden every 2 days and weeds it every 6 days. She does both chores today. How long will it be before she both waters and weeds her garden?

• 6

• 12

• 2

• 3

Find the LCM of 21 and 18 (SHOW ALL WORK)

Casey is creating identical candy bags using 18 chocolate bars and 30 peanut butter cups. What is the greatest number of bags he can fill using all the candy?

• 12

• 48

• 6

• 90

What is the least common multiple of 9 and 15?

• 45

• 3

• 135

• 90

Two ferries left a dock at 11:00 a.m. Ferry A leaves every 8 minutes. Ferry B leaves every 12 minutes. If the ferries leave on schedule, when is the next TIME both ferries will leave together?

• 11:02 a.m

• 11:04 a.m

• 11:20 a.m

• 11:24 a.m

Blessing is making balloon arrangements for a birthday party. There are 30 purple balloons and 18 gold balloons. Each arrangement must be identical.

a) What is the largest possible number of arrangements that can be made?

b) How many purple balloons and how many gold ballons will be in the arrangement?

(SHOW ALL WORK)

Blue beads come in packs of 60, while white beads come in packs of 80. What is the smallest amount of beads you can buy in order to have the same numbers of blue and white beads?

• 140 beads

• 20 beads

• 480

• 240