Posadas-Prime and Composite

1. Giselle made each rectangle below using 13 tiles. These are all the arrays she could find for the number 13. Based on the arrays, what should Giselle conclude about the number 13?

• The number 13 has no prime factors.
• The number 13 is composite
• The number 13 is prime
• The number 13 is neither prime nor composite

Tags

CCSS.4.OA.B.4

3. Which number is a composite number?

• 17
• 27

• 7
• 37

Tags

CCSS.4.OA.B.4

8. Cesario used square tiles to create arrays for the number 9. These are all the arrays he found. Based on Cesario's arrays, which is a correct conclusion about the number 9?

• It is a prime number
• It is a composite number
• It is neither prime nor composite
• It has exactly 2 factors

Tags

CCSS.4.OA.B.4

9. Which is a prime number?

• 61
• 63
• 65
• 69

Tags

CCSS.4.OA.B.4

Which of the following numbers is neither prime nor composite?

• 0

• 1

• 2

• 3

Tags

CCSS.4.OA.B.4

Which of the following statements is true about the number 15?

• It is a prime number

• It is a composite number

• It is neither prime nor composite

• It has exactly 2 factors

Tags

CCSS.4.OA.B.4

which number is composite

• 11
  11
• 13
• 21
• 23

Tags

CCSS.4.OA.B.4

Select all of the composite numbers.

• 12

• 16

• 3

• 7

Tags

CCSS.4.OA.B.4

Composite numbers:

• Are always bigger than prime numbers
• Have more than 2 factors
• Have 2 pairs of factors
• Don't have factors

Tags

CCSS.4.OA.B.4