Prime and Composite Numbers

Prime and Composite Numbers

Open Ended

What are factors?

Hint:

It has something to do with multiplication.

Another Hint:

The PRODUCT is the answer you get when you multiply numbers.

Infer:

A factor is...

https://www.youtube.com/watch?v=TXDyU5f5WR8

Multiple Choice

What do we know about even numbers?

• Almost all of them are prime.

• Almost all of them are composite.

Multiple Choice

Most prime numbers are________.

• even

• odd

• zero

• curved

Multiple Choice

These numbers have only two factors 1 and the number.

• Prime

• Composite

• Even

• Odd

Multiple Choice

The only even prime number is _____.

• 8

• 6

• 5

• 2

• 0

Multiple Choice

Zero has an infinite number of factors, so zero is _______.

• prime

• composite

• neither prime nor composite

Zero

Zero has an infinite (limitless) number of factors. Every and any number multiplied by 0 is 0. *Composite numbers have a finite, or limited, number of factors.

Multiple Select

Check the factors of 10

• 1

• 2

• 4

• 5

• 10

Multiple Choice

10 is a ________ number

• prime

• composite

Multiple Select

Check the factors of 5.

• 1

• 2

• 5

• 10

Multiple Choice

5 is a _______ number.

• prime

• composite

Multiple Select

Check the factors of 12

• 1

• 2

• 3

• 4

• 6

Multiple Choice

12 is a ____________ number.

• prime

• composite

Multiple Choice

Which group has all the factors of 18?

• 1, 18, 2,9

• 1,18

• 1,18,4,4,2,9

• 1,18,2,9,3,6

Multiple Choice

18 is a ___________ number.

• prime

• composite

Multiple Select

Check all the factors of 41.

• 1

• 2

• 7

• 39

• 41

Multiple Choice

41 is a _________ number.

• prime

• composite

Multiple Select

Check all factor of 15

• 1

• 3

• 5

• 7

• 15

Multiple Choice

15 is a __________ number.

• prime

• composite

Multiple Select

Check all factors of 49.

• 1

• 7

• 9

• 40

• 49

Multiple Choice

49 is a _______ number.

• prime

• composite

Multiple Select

Check all factors of 73.

• 1

• 3

• 70

• 73

Multiple Choice

73 is a _________ number.

• prime

• composite

Multiple Select

Check all factors of 33.

• 1

• 3

• 11

• 30

• 33

Multiple Choice

33 is a ________ number.

• prime

• composite

Multiple Select

Check all factors of 21.

• 1

• 3

• 7

• 20

• 21

Multiple Choice

21 is a _______ number.

• prime

• composite

HCS Supplemental Resources

Prime and Composite Numbers