GCF and LCM

What is the GCF of 5 and 10?

• 10
• 5
• 1
• 50

What is the LCM of 18 and 24?

• 6
• 9
• 72
• 144

The number 924 is divisible by which numbers

• 2,  3,  4,  6
• 2,  3,  4
• 2,  3,  5 
• 2,  3,  4,  9

Mario, Maria, and Macy are running around the HS track. They start the same point at the same time. It takes Mario four minutes to run around the track;  Maria, six minutes to run around the track; and Macy three minutes to run around the track. If they start at the same time, after how many minutes will they be at the starting point together again?

• 24 minutes
• 72 minutes
• 12 minutes
• 60 minutes

You are collecting items for a charity.  You have 12 tubes of toothpaste,  36 toothbrushes, and 60 bars of soap. You need to make as many identical packages as possible without having any leftover. What is the greatest number of packages you can make?

• 6
• 12
• 180
• 2

Train Often leaves the station every 5 minutes. Train Crowded leaves the station every 9 minutes. Train Infrequent leaves the station every 15 minutes.  All three trains leave at 9 am.  Assuming they run on time, when is the next time they will leave the station at the same time again?

• 45 minutes
• 8:15 pm
• 10:30 am
• 9:45 am

You need to make Halloween gift bags for kids affected by recent natural disasters. Your job is to make as many  gift bags as possible without having any candy left over. You have 120 Hershey's kisses, 300 packages of gum, and 84 packages of pop corn. What is the greatest number of gift bags you can make without having any candy left over?

• 4 bags
• 3 bags
• 12 bags
• 30 bags

What is the least common factor of 15 and 24?

• 3
• 120
• 6
• 240

A local supermarket is giving out prizes for it's grand opening. Every 20th customer gets a free water bottle and every 75th customer gets a free soda bottle. Which customer will be the first to receive both prizes?

• The 150th customer

• The 200th customer

• The 5th customer

• The 300th customer

Evaluate 9 + 8² ÷ 2 ⋅ (4 + 2²) 

• 265
• 13
• 10
• 73