Factors and Multiples Quest 3

​Factors and Multiples Quest 1a

​Finding Greatest Common Factor and Least Common Multiple

Poll

How do you feel about finding greatest common factors and least common multiples?

• I don't know understand anything about this.

• I understand a little about this.

• I somewhat understand this.

• I understand this.

• I know this so well I could explain and show it.

Draw

Show the prime factorization of 10.

Draw

Show the prime factorization of 30.

Draw

Show the prime factorization of 50.

Multiple Choice

Which answer shows all the factors of 12?

• [1, 2, 3, 5, 6, 12]
• [1, 2, 3, 4, 6, 8]
• [1, 2, 3, 4, 6, 12]
• [2, 3, 4, 5, 6, 7]
• [1, 2, 3, 4, 5, 6]

Multiple Choice

Which answer shows all the factors of 40?

• 1, 3, 5, 7, 10, 20, 30
• 2, 4, 6, 8, 12, 16, 24
• 2, 4, 5, 10, 15, 20, 40
• 1, 2, 4, 5, 8, 10, 20
• 1, 2, 4, 5, 8, 10, 20, 40

Draw

List out all the factors of 45.

Draw

List out all the factors of 100.

Fill in the Blank

Which factor of 15 is missing?

1, 3, 5, __

Fill in the Blank

Which factor of 60 is missing?

1, 2, 3, 4, 5, 6, 10, 12, 15, __, 30, 60

Multiple Choice

Select the prime factorization of 23:

• 7x3x1

• 13x2

• 4x2x1

• 1x23

• 2x3

Fill in the Blank

Find the GCF of 10 and 15.

Fill in the Blank

Find the GCF of 17 and 20.

Fill in the Blank

Find the GCF of 6 and 30.

Fill in the Blank

Find the GCF of 21 and 14.

Fill in the Blank

Find the GCF of 40 and 16.

Fill in the Blank

Find the LCM of 20 and 10.

Fill in the Blank

Find the LCM of 12 and 5.

Fill in the Blank

Find the LCM of 8 and 4.

Fill in the Blank

Find the LCM of 7 and 4.

Video Response

Explain the difference between greatest common factor (GCF) and least common multiple (LCM).

Open Video Recorder

Dropdown

The greatest​

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factor is the biggest number that can divide into a set of numbers with no ​

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.

The ​

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common multiple is the ​smallest number that two numbers can ​

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to.

Factors have to ​

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. To find a multiple you have to multiply.

Fill in the Blank

Find the GCF of 200 and 60.

Fill in the Blank

Find the LCM of 200 and 60.

Poll

How do you feel about finding greatest common factors and least common multiples?

• I don't know understand anything about this.

• I understand a little about this.

• I somewhat understand this.

• I understand this.

• I know this so well I could explain and show it.