Chapter 8-2 "Prime and Composite Numbers"

A prime number has

• one factor.

• two factors.

• three or more factors.

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Which number is the only even prime number?

• 2

• 4

• 6

• 8

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Composite numbers have...

• no factors.

• one factor.

• two factors.

• three or more factors.

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True or False?

The number 1 is a prime number.

• True

• False

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Find the prime number.

• 10
• 9
• 7
• 4

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Which one is a composite number?

• 37
• 41
• 21
• 29

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Which number below is NOT prime?

• 2
• 11
• 13
• 18

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Which number is NOT a factor of 10?

• 1
• 2
• 3
• 5

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Which number is NOT prime?

• 3
• 7
• 17
• 21

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Decide if the number is prime or composite: 15

• Prime

• Composite

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