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QR Challenge: Number Theory

QuestionAnswer
The combination of Mr. Smith's lock is the prime factorization of 72. What is the prime factorization of 72?
What is the greatest common factor of 90
What numbers are 55 divisible by?
What is the prime factorization for 150?
Find the LCM for 20 and 14.
Mrs. Kidd works 35 hours a week. She earns $9.39 per hour. How much does Mrs. Kidd earn each week?
Holly purchases materials to make necklaces. There are 6 beads in a package and 8 stars in a package. What is the least number of watches Holly can make without having any supplies left over?
GCF of 49 nd 14.
Mr. Lofte teaches 2 science classes. There are 24 students in his Physics class and 32 in his Biology class. If he divided both classes into equal-sized lab groups, what is the greatest number of students in each lab group?
Leslie made 63 macadamia nut cookies and 81 ginger bread cookies. She is putting together a package and each bag will contian only one type of cookie. If she places the greatest number of cookies in each bag, how many bags will contain ginger bread cookies?
Which expression has a value of 13? See board.
Solve this expression. See board
45.24 X 2.5
29.00 - 2
1.79 + 0.32
3.213 divided by 0.03
Bus A arrives at the bus stop every 12 minutes. Bus B arrives at the bus stop every 10 minutes. In how many minutes will both Bus A and Bus B be at the bus stop at the same time?
The high school football team has 24 players. They do a drill with either 8 or 12 players. What is the smallest number of players who can be in the marching band?
12.99 X 0.07
12.68 - 2.99

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