6-3 Decimal Unit Review

Adding/Subtracting Decimals

100

2.4 + 6.7

9.1

200

16.88 - 3.6

13.28

300

92.467 + 16

108.467

400

5.2 - 2.68

2.52

500

63.47 + 2.15 - 58.301

7.319

Multiplying Decimals

100

3.1 x 5

15.5

200

3.57 x 1.1

3.927

300

634.8 x 1.2

761.76

400

.264 x 3.2

0.8448

500

629.56 x .03

18.8868

Dividing Decimals

100

8 ÷ 5

1.6

200

1.62 ÷ 4

0.405

300

98.3 ÷ 0.25

393.2

400

6.81 ÷ 1.1

6.19

500

1.746 ÷ 0.07

24.94

Applications of Decimal Operations

100

Ms. O'Neal purchases ice cream for her class. If the ice cream costs $2.25 each and Ms. O'Neal has 13 students, how much will she spend? 

$29.25

200

Mr. Edmunds' beach staff makes $682 in tips on a busy day. The tips need to be shared among the entire staff working that day. If there were 8 people working, how much would each person receive?

$85.25

300

Ms. Natalie has her eye on a really cool sweater that is on sale. The original price of the sweater is $92.50 and the sale price is $43.75. Help Ms. Natalie figure out how much money she saved.

$48.75

400

Mrs. Schmidt is treating her teachers to lunch and she wants to give the delivery person a 25% tip (to calculate a 25% tip, multiply by 0.25). The total for the lunch is $238.50.  How much should Mrs. Schmidt tip? 

If necessary, be sure to round to the nearest hundredth.

$59.63

500

Mrs. Anderson is purchasing some decorations for her baby's room. The total comes to $53.50. Calculate the 6% sales tax (multiply by 0.06) on Mrs. Anderson's things and let her know her total cost.

total cost = $56.71

tax = $3.21