1. 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

2. 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

3. When dividing two negative numbers, the quotient is positive.
True
False
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4. When dividing a negative number and a positive number, use the sign of the larger number.
True
False
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5. 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.

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

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

8. 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
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9. Examples 1)
When dividing fractions, change division to multiplying by the reciprocal.

10. 2)

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