prime, composites and factors

What number is a prime?

• 24

• 23

• 21

• 27

Tags

CCSS.4.OA.B.4

What is a prime number?

• a number with only two factors, 1 x itself.

• a number with more than 2 factors.

Tags

CCSS.4.OA.B.4

List the factors of the number 27?

*create a factor T and use...

multiplication chart

calculator

Tags

CCSS.4.OA.B.4

List the factors of 36?

Tags

CCSS.4.OA.B.4

What are the common factors of 27 and 36?

• 1, 3, 7

• 1, 3, 9

• 1, 3

• 1, 7, 9

Tags

CCSS.4.OA.B.4

Which numbers are prime?

*use notes and multiplication chart

• 3

• 13

• 23

• 33

• 43

Tags

CCSS.4.OA.B.4