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Prime Numbers
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Slide 1

Prime Numbers

Prime Numbers

Some Simple Tips and Reminders

Slide 2

Definitions

Definitions

Even Numbers – Any number that can be divided by 2

Odd Numbers – Any number that cannot be divided by 2

Composite Number – An integer that can be divided by at least one other number (a factor) other than itself

Slide 3

Definitions

Definitions

Prime Number – An integer whose only factors are 1 and itself.

Factor – a number that can divide another number without a remainder.

Prime Factors – an expression of numbers that divides another integer without a remainder where all the factors are prime.

Slide 4

What numbers are prime?

What numbers are prime?

Let’s look at a number grid from 1 to 100 and see how they were discovered.

Slide 5

Here’s How You Do It

Here’s How You Do It

Take out the number 1 because it is a special number

Slide 6

Here’s How You Do It

Here’s How You Do It

Take out the number 1 because it is a special number

Slide 7

Here’s How You Do It

Here’s How You Do It

Take out numbers that have a composite factor of 2

Slide 8

Here’s How You Do It

Here’s How You Do It

Take out numbers that have a composite factor of 2

Slide 9

Here’s How You Do It

Here’s How You Do It

Take out numbers that have a composite factor of 3

Slide 10

Here’s How You Do It

Here’s How You Do It

Take out numbers that have a composite factor of 3

Slide 11

Here’s How You Do It

Here’s How You Do It

Take out numbers that have a composite factor of 5

Slide 12

Here’s How You Do It

Here’s How You Do It

Take out numbers that have a composite factor of 5

Slide 13

Here’s How You Do It

Here’s How You Do It

Take out numbers that have a composite factor of 7

Slide 14

The PRIME Numbers!

The PRIME Numbers!

Take out numbers that have a composite factor of 7

Slide 15

How Do We Know They Are Prime?

How Do We Know They Are Prime?

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