Prime Numbers and Factor

A factor divides evenly into another number without a ________ left over.

• prime number

• remainder

• factor

• bigger number

Tags

CCSS.L.3.4D

CCSS.L.6.4C

CCSS.L.7.4C

CCSS.L.8.4C

CCSS.L.9-10.4C

What is a prime number?

• a number with no factors

• a number with only 1 as a factor

• a number with only 1 and itself as a factor

• a number with more than 2 factors

Tags

CCSS.4.OA.B.4

Which of the following is a prime number?

• 14

• 2

• 18

• 33

Tags

CCSS.4.OA.B.4

Imagine you're looking for the factors of 16. You start by dividing it by whole numbers 1, 2, 3, 4, 5, 6 and 7. You find the factors 1 and 16, 2 and 8 and 4 and 4. What is the best thing to do next?

• divide 16 by 8 to find more factors

• divide 16 by itself to find more factors

• stop because you've found all the factors already

• multiply 16 by a prime number

Tags

CCSS.4.OA.B.4

What are the factors of 27?

• 1, 3, 9

• 1, 3, 27

• 1, 3, 9, 27

• 3, 9, 27

Tags

CCSS.4.OA.B.4

What are the factors of 7?

• There are no factors.

• 1

• 7

• 1 and 7

Tags

CCSS.4.OA.B.4

What are the factors of 12?

• 1, 2, 6, 12

• 1, 2, 3, 4, 6

• 2, 3, 4, 6, 12

• 1, 2, 3, 4, 6, 12

Tags

CCSS.4.OA.B.4

Check all the correct answers.

Which of the following numbers have 2 as a factor?

• 8

• 34

• 55

• 68

Tags

CCSS.4.OA.B.4

All numbers have what number as a factor?

• 0

• 1

• 2

• 3

Tags

CCSS.4.OA.B.4