Lesson 8 Session 4: Prime or Composite

​Lesson 8 Session 4: Prime or Composite

I can use factor pairs of a number to decide if a number is prime or composite.​

Multiple Choice

What are factor pairs?

• Two numbers that I multiply to give me a product.

• The answer to a multiplication equation.

• A number that can only be multiplied by itself and 1.

​WE DO on our white board

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What are the factor pairs of 36?

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Is the number 36 prime or composite? How can we tell.​

Draw

What are the factor pairs of 16?

Multiple Select

Is the number 16 prime or composite? Choose the answer and choose why.

• Prime

• Composite

• The factors of 16 are 1,2,4,8,16

• The factors of 16 are 1,16

Multiple Select

Olivia has 69 pictures that she wants to put into a photo album. Click on all the right ways she could put her photos into the photo album.

• 1 photo on 69 pages.

• 3 photos on 23 pages.

• 69 photos on 1 page.

• 9 photos on 7 pages.