LCM and GCF
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by Charles Hanosek
| 12 Questions
1
10 pts
What does GCF stand for?
A Great Commons Fair
B Greatest Common Factor
C Great Cookie Finder
D Gadzooks! Cannon! Fire!
2
10 pts
How do you find the GCF?
A Find all of the factors of these numbers. Then, find the greatest one that the two numbers have in common.
B Find most of the factors of these numbers. Then, find the greatest one that the two numbers have in common.
C Find someof the factors of these numbers. Then, find the greatest one that the two numbers have in common.
3
10 pts
What are the factors of 12?
A 1, 2, 6, 12
B 2, 6, 12
C 1, 2, 3, 6, 12
D 1, 2, 3, 4, 6, 12
4
10 pts
What is the Greatest Common Factor of these two numbers:24, 36
A 6
B 12
C 24
D 36
5
10 pts
What is the GCF of 18 and 25?
A 1
B 2
C 5
D 6
6
10 pts
What is the GCF of these numbers: 24, 32
A 2
B 4
C 8
D 16
7
10 pts
What do mathematicians call a number when the only factors it has are 1 and itself? (Examples: 3, 7, 11, 13, 17, 23, etc.)
A Awesome!
B Composite
C Parallel
D Prime
8
10 pts
What does LCM stand for?
A Last Call on the Microphone
B Last Common Multiple
C Least Common Multiple
D Last Calling Monkey
9
10 pts
How do you find the Least Common Multiple?
A List all of the multiples of each number, then circle the least multiple that they have in common.
B List most of the multiples of each number, then circle the least multiple that they have in common.
C List a few of the multiples of each number, then circle the least multiple that they have in common.
10
10 pts
What is the LCM of these numbers: 10, 20?
A 1
B 10
C 20
D 40
11
10 pts
What is the LCM of these numbers: 20, 25?
A 50
B 60
C 80
D 100
12
10 pts
What is the LCM of these numbers: 15, 20?
A 60
B 100
C 120
D 140
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