Rational Number Operations

Adding Rational Numbers

100

3/4 + 2/3

1  5/12

200

34.8 + 16.95 =

51.75

300

1/4 + 5  5/6

6  1/12

400

43.2 + (-74.4)

-31.2

500

3  4/5 + 7  1/3

11  2/15

Subtracting Rational Numbers

100

-1.8 - 0.37

-2.17

200

-28.32 - (-74.54)

46.22

300

2  3/5  - 1 5/6 =

23/30

400

-74.2 - 8.9 - 4.5 =

-87.6

500

635 - 33 - ( -125) =

727

Multiplying Rational Numbers

100

(-12)(-4)=

48

200

(3/5)(-3/8)=

-9/40

300

(-1.4)(-4)=

5.6

400

(-3  1/2)(-4  3/4)(5  1/2)=

91  7/16

500

(-1.3)(-5.1)(-0.33)=

-2.1879

Dividing Rational Numbers

100

-51 ÷ 3

-17

200

8/34 ÷ (-1/2)=

-8/17

300

-450 ÷ (-50)=

9

400

-144 ÷ 4=

-36

500

-16.54 ÷ (-0.4)=

-41.35

Problem Solving

100

John built 1/3 of the deck on Saturday and 2/7 or the deck on Sunday.  What fraction of the deck is left to be built?

8/21

200

Amy purchased an iPhone that was on sale.  The sale price is 1/5 of the original price of $900.  How much did Ann pay for the phone?

$720

300

Sean had $75.00 in his bank account on Monday.  He deposited $43.50 on Tuesday and withdrew $37.25 on Wednesday.  What was the final balance of Sean's account?

$81.25

400

Mary bought a concert ticket for $65.  Jared paid 1 1/2 times as much for his ticket.  How much did Jared spend?

$97.50

500

Tony made 50 quarts of fruit punch for his party.  He poured the punch into cups that hold 1/4 of a quart.  How many cups did Tony use?

200 cups