LCM and GCF

by Charles Hanosek

| 12 Questions1

10

What does GCF stand for?

Think Fear Factor!

A Great Commons Fair

B Greatest Common Factor

C Great Cookie Finder

D Gadzooks! Cannon! Fire!

2

10

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

What are the factors of 12?

Factors are numbers you multiply together to get your product.

A 1, 2, 6, 12

B 2, 6, 12

C 1, 2, 3, 6, 12

D 1, 2, 3, 4, 6, 12

4

10

What is the Greatest Common Factor of these two numbers:24, 36

Find all of the factors of these numbers. Then, find the greatest one that the
two numbers have in common.

A 6

B 12

C 24

D 36

5

10

What is the GCF of 18 and 25?

Find all of the factors of these numbers. Then, find the greatest one that the
two numbers have in common.

A 1

B 2

C 5

D 6

6

10

What is the GCF of these numbers: 24, 32

Find all of the factors of these numbers. Then, find the greatest one that the
two numbers have in common.

A 2

B 4

C 8

D 16

7

10

What do mathematicians call a number when the only factors it has are 1 and
itself? (Examples: 3, 7, 11, 13, 17, 23, etc.)

Transformers--Optimus ___________

A Awesome!

B Composite

C Parallel

D Prime

8

10

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

How do you find the Least Common Multiple?

Least means the lowest amount.

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

What is the LCM of these numbers: 10, 20?

A 1

B 10

C 20

D 40

11

10

What is the LCM of these numbers: 20, 25?

A 50

B 60

C 80

D 100

12

10

What is the LCM of these numbers: 15, 20?

A 60

B 100

C 120

D 140

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