1. 08.30.2018 Ticket in the Door Current lesson Guided practice
Agenda
Ticket in the Door
Ticket in the Door
Current lesson
Guided practice
Format your paper for Cornell notes
Topic: Dividing Rational numbers
E.Q. How do I divide rational numbers?
D.E.A.R.

2. Introduction Video

3. Dividing Rules
1) If the numbers have the same signs then the quotient is positive.
-32 ÷ (-8 )= 4
2) If the numbers have different signs then the quotient is negative.
81 ÷ (-9) = -9

4. When dividing two negative numbers, the quotient is positive.
True
False
Answer Now

5. When dividing a negative number and a positive number, use the sign of the larger number.
True
False
Answer Now

6. The reciprocal of a number is called its multiplicative inverse.
The reciprocal of is
where a and b  0.
The reciprocal of a number is called its multiplicative inverse.
A number multiplied by its reciprocal/multiplicative inverse is ALWAYS equal to 1.

7. Example #1
The reciprocal of is
Example #2
The reciprocal of -3 is

8. Basically, you are flipping the fraction!
We will use the multiplicative inverses
for dividing fractions.

9. Which statement is false about reciprocals?
Reciprocals are also called additive inverses
A number and its reciprocal have same signs
If you flip a number, you get the reciprocal
The product of a number and its reciprocal is 1
Answer Now

10. Examples 1)
When dividing fractions, change division to multiplying by the reciprocal.

11. 2)

12. What is the quotient of -21 ÷ -3?18
-18 7 -7
Answer Now

13. .
Answer Now

14. divide rational numbers.
Reference:teachers.henrico.k12.va.us/math/hcpsalgebra1/documents/2-4/divrationals.ppt Objective The student will be able to:
divide rational numbers.
SOL: none
Designed by Skip Tyler, Varina High School and Nicole Kessinger, Deep Run High School

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