Rational Numbers

Dividing Rational #'s

100

negative / negative = 

positive quotient

200

8.2 divided by -4

-2.05

300

-2/3 divided by 1/2

1 1/3

400

-8/9 divided by -4/9

2

500

1 3/8 divided by 1/8

11

Multiplying Rational #'s

100

positve x negative = 

negative product

200

12.80 x 6.3

80.640

300

4.5 x 3

13.5

400

-15.6 x -2

31.2

500

-7/10 x 1/4

7/40

Subtracting Rational #'s

100

Solve the problem

15 - (-8)

23

200

Mickey borrwed $75.00 from his grandparents to purchase a season pass to a theme park. After saving up his allowance for one month, he is able to pay them $24.65. How much does Mickey still owe his grandparents?

Mickey owes his grandparents $50.35 because he borrwed $75.00 and he paid $24.65.

300

-9/10 - (-3/10)

-6/10

400

-20 - 9

-11

500

10.8 - (-6.4)

17.2

Adding Rational #'s

100

-16 + (-8)

-24

200

6.25 + (-8.50)

-2.25

300

-54.26 + (-15.42)

-69.68

400

-1 1/2 + 2 7/10

1 1/5

500

-6/11 + -3/11

-9/11

Vocabulary

100

What are all positive and negative whole numbers called?

Integers

200

What goes in the blank?

Multiply the digits as usal, ignoring the ________________.

Deciamal Point

300

What is your answer in multiplication called?

Product

400

What is your answer in division called?

Quotient

500

How do we divide fractions?

Keep Change Flip