Download presentation

Presentation is loading. Please wait.

Published byThomas Reynolds Modified over 2 years ago

1
Is It A Prime Number, Yes or No? Jonathan Brinkerhoff

2
There are different kinds of numbers. You know about whole numbers, like 5, and fractions like ⅓. You know about odd and even numbers. Today, we’ll learn about another kind of number – prime numbers.

3
I’m going to show you some numbers. Some are prime and some are not. When you think you know what makes a number prime or not, raise your hand.

4
3 is a prime number 3 = 1 X 3

5
4 is not a prime number 4 = 1 X 4 4 = 2 X 2

6
5 is a prime number 5 = 1 X 5

7
6 is not a prime number 6 = 1 X 6 6 = 2 X 3

8
7 is a prime number 7 = 1 X 7

9
12 is not a prime number 12 = 1 X 12 12 = 2 X 6 12 = 3 X 4

10
13 is a prime number 13 = 1 X 13

11
15 is not a prime number 15 = 1 X 15 15 = 3 X 5

12
What do you think a prime number is?

13
You figured out that a prime number has only two factors, itself and 1.

14
Let’s Practice! If it’s a prime number If it’s not a prime number

15
8

16
9

17
14

18
17

19
21

20
10

21
19

22
You can correctly identify prime numbers.

24
2 is a prime number 2 = 1 X 2

25
9 is not a prime number 9 = 1 X 9 9 = 3 X 3

26
11 is a prime number 11 = 1 X 11

27
14 is not a prime number 14 = 1 X 14 14 = 2 X 7

28
What do you think a prime number is?

Similar presentations

Presentation is loading. Please wait....

OK

Prime Numbers and composite numbers

Prime Numbers and composite numbers

© 2018 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on tunnel diode characteristics Ppt on biopotential signals Ppt on mumbai as the financial capital of india Ppt on global warming in india free download Ppt on mammals and egg laying animals list Pdf converter to ppt online Ppt on synthesis and degradation of purines and pyrimidines size Ppt on mirror link Ppt on social media marketing Ppt on cloud computing for seminar