1. Divide with 1 and 0
MAFS.3.OA.3.7

2. Lesson Opening
Write an equation that represents the following situation. Use the letter c to represent the unknown.
Sharon has 6 cookies and 3 cookie jars. She wants to put the same number of cookies in each jar. How many cookies will she put in each jar?

3. There are 3 cookies and 1 jar. How many cookies are in the jar?
Dividing with 1
There are 3 cookies and 1 jar. How many cookies are in the jar?

4. There are 3 cookies and 1 jar. How many cookies are in the jar?
Dividing with 1
There are 3 cookies and 1 jar. How many cookies are in the jar?

5. Dividing with 1
There are 3 cookies and 1 jar. How many cookies are in the jar?
3 ÷ 1 = 3
Number of cookies
Number of jars
Number of cookies in each jar

6. Dividing with 1
There are 3 cookies and 1 jar. How many cookies are in the jar?
RULE:
Any number divided by 1 equals that number.

7. There are 3 cookies and 3 jars. How many cookies are in each jar?
Dividing with 1
There are 3 cookies and 3 jars. How many cookies are in each jar?

8. There are 3 cookies and 3 jars. How many cookies are in each jar?
Dividing with 1
There are 3 cookies and 3 jars. How many cookies are in each jar?

9. Dividing with 1
There are 3 cookies and 3 jars. How many cookies are in each jar?
3 ÷ 3 = 1
Number of cookies
Number of jars
Number of cookies in each jar

10. Dividing with 1
There are 3 cookies and 3 jars. How many cookies are in each jar?
RULE:
Any number divided by itself equals 1.

11. Dividing with 0
If there are 0 cookies and 3 jars, how many cookies will be in each jar?

12. Dividing with 0
If there are 0 cookies and 3 jars, how many cookies will be in each jar?

13. Number of cookies in each jar
Dividing with 0
If there are 0 cookies and 3 jars, how many cookies will be in each jar?
0 ÷ 3 = 0
Number of cookies
Number of jars
Number of cookies in each jar

14. Zero divided by any number (except zero) equals 0.
Dividing with 0
If there are 0 cookies and 3 jars, how many cookies will be in each jar?
RULE:
Zero divided by any number (except zero) equals 0.

15. Dividing with 0
If there are 3 cookies and 0 jars, how many cookies will be in each jar?

16. Dividing with 0
If there are 3 cookies and 0 jars, how many cookies will be in each jar?

17. Number of cookies in each jar
Dividing with 0
If there are 3 cookies and 0 jars, how many cookies will be in each jar?
3 ÷ 0 =
Number of cookies
Number of jars
Number of cookies in each jar

18. Dividing by zero is NOT possible.
Dividing with 0
If there are 3 cookies and 0 jars, how many cookies will be in each jar?
You cannot separate the cookies equally into jars because there are NO jars.
Dividing by zero is NOT possible.
3 ÷ 0 =
Number of cookies
Number of jars
Number of cookies in each jar

19. Dividing by zero is NOT possible.
Dividing with 0
RULE: You CANNOT divide a number by 0.
Think of the related multiplication fact:
_____ x 0 = 4.
Nothing times 0 will give you 4.
If there are 3 cookies and 0 jars, how many cookies will be in each jar?
You cannot separate the cookies equally into jars because there are NO jars.
Dividing by zero is NOT possible.
3 ÷ 0 =
Number of cookies
Number of jars
Number of cookies in each jar

21. What are the rules for dividing with 1 and 0?

22. Exit Ticket 5 ÷ 1 2 ÷ 2 0 ÷ 3 What is the quotient?
Choose one of the expressions above and write the related facts for it.