CCSS.Math.Content.4.OA.B.4

Which choice lists all the factors for the number 24?

• 2, 3, 4, 6, 8, 12, 24
• 2, 3, 4, 6, 8, 12, 24, 36
• 1, 2, 3, 4, 6, 8, 12, 24
• 1, 2, 4, 5, 6, 8, 12 ,24

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CCSS.Math.Content.4.OA.B.4

A prime number is...

• a number that has only one factor.
• a number that has at least two factors.
• a number that has more than two factors.
• a number that has only two factors.
  (1 and itself)

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CCSS.Math.Content.4.OA.B.4

Which number is a factor of 20?

• 5
• 3
• 6

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CCSS.Math.Content.4.OA.B.4

Which number is a prime number?

• 8
• 10
• 3

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CCSS.Math.Content.4.OA.B.4

Which number is a factor of 24

• 9
• 7
• 11
• 12

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CCSS.Math.Content.4.OA.B.4

Which number is a factor of 23?

• 8
• 4
• 3
• 1

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CCSS.Math.Content.4.OA.B.4

Which number is a factor of 7?

• 3
• 4
• 6
• 7

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CCSS.Math.Content.4.OA.B.4

is 5 prime or composite?

• prime
• composite

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CCSS.Math.Content.4.OA.B.4

Which of the following is NOT true about prime numbers? 

• They have exactly two factors 
• 1 is a factor of every prime number
• No prime numbers end in zero
• All prime numbers are odd numbers.  

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CCSS.Math.Content.4.OA.B.4

Besides 15 and 1, what is one factor of 15?

• 2
• 4
• 6
• 3

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CCSS.Math.Content.4.OA.B.4