Prime and Composite Numbers

How is a prime number different from a composite number?

• Prime numbers are smaller than composite numbers.
• Composite numbers are larger than prime numbers.
• All odd numbers are prime numbers.
• Prime numbers have only 2 factors, and composite numbers have more than 2 factors.

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CCSS.4.OA.B.4

What do we call the answer to a multiplication question?

• sum
• difference
• quotient
• product

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CCSS.6.NS.B.3

Which list has only prime numbers?

• 2, 3, 4, 5
• 1, 5, 7, 9
• 2, 3, 5, 7
• 2, 4, 6, 8

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CCSS.4.OA.B.4

Which list is only composite numbers?

• 1, 3, 4
• 2, 4, 6
• 4, 6, 8
• 5, 6, 8

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CCSS.4.OA.B.4

Composite numbers have

• no factors.

• one factor.

• two factors.

• three or more factors.

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CCSS.4.OA.B.4

Which numbers are composite?

• 55

• 49

• 63

• 37

• 13

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CCSS.4.OA.B.4

Which numbers are prime?

• 23

• 61

• 19

• 7

• 9

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CCSS.4.OA.B.4

Which numbers are composite?

• 6

• 45

• 33

• 47

• 29

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CCSS.4.OA.B.4

Which numbers are prime?

• 1

• 2

• 11

• 15

• 21

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CCSS.4.OA.B.4

What are factors?

• The top number in a fraction.
• The numbers multiplied together to make a product.
• The bottom number in a fraction.
• Angles smaller than 90 degrees.

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CCSS.4.OA.B.4