Decimal Operations 1

Decimal Operations 6.7 The student will solve single-step and multistep practical problems involving addition, subtraction, multiplication, and division of decimals.

Decimal Operations 2

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Decimal Operations 3

Adding and Subtracting Decimals Practice 1. 78.9 - 55.779 = _______

4. 46 + 39.5 = _______

2. 73 + 48.7 = _______

5. 72 – 67.01 = _______

3. 41.3 – 20.65 = _______

6. 65 + 56.8 = _______

7.

89.61 - 26.632

10.

8.

29 + 27.69

11. 51 - 38.75

9.

71 - 12.3

12. 54.7 + 9.39

26 + 13.824

13. You have a savings account with a balance of $423.98. You deposit $61.75. Then you withdraw $129.64. About how much is left in your account? What is the actual amount left in your account? Estimate: ___________ Actual balance: ___________ 14. Lucas bought three CDs for $11.29, $15.75, and $8.95, including sales tax. He gave the clerk $50.00. How much should Lucas receive in change? Change: ___________ 15. It rained 0.77 inches on Monday. On Tuesday, it rained 0.23 inches more than on Monday. How much did it rain on both days combined? Total rain: ___________

Decimal Operations 4

Adding and Subtracting Decimals Homework 1. 58 - 45.183 = _______

4. 92 + 8.83 = _______

2. 79.3 + 10.21 = _______

5. 67.15 – 24.302 = _______

3. 17 – 1.2 = _______

6. 96 + 37.367 = _______

7.

69.03 - 59.688

10.

8.

83 + 77.841

11. 33.97 - 8.851

9.

93 - 32.2

12.

66 + 8.84

48 + 44.636

13. A truck carrying 913.17 pounds of sand travels to a construction yard and loses 52.746 pounds of sand along the way. About how much is left in the truck? What is the actual amount of sand left in the truck when it arrives at the yard?

Estimate: ___________ Actual balance: ___________ 14. Micaila bought three books for $12.36, $18.17, and $9.45, including sales tax. She gave the clerk $50.00. How much should Micaila receive in change? Change: ___________ 15. Jonathan bought 9.6 pounds of melon and 1.28 pounds of cherries. How much fruit did he buy in all? Total fruit: _________ lbs.

Don’t forget to check your HW online! My score is ___/15

Decimal Operations 5

Multiplying and Dividing Decimals Practice 1. 63.9 x 7.0 = _______

4. 3576 ÷ 9.1 = _______

2. 136.9 ÷ 0.77 = _______

5. 88.6 x 5.01 = _______

3. 44.84 x 9.84 = _______

6. 8675 ÷ 0.50 = _______

7.

39.6 x 5.20

10. 8.2 8688

8.

28.15 x 5.5

11. 0.99 6475

14.36 4.9

12. 8.4 711.9

9. x

13. Tyler bought movie tickets for himself and two friends. Each ticket costs $8.50. You pay with two $20 bills. How much did you spend? How much change did you receive? Spent: ___________ Change: ___________ 14. Five hungry friends share seven pizzas that cost $8.25 each. How much does each friend pay? Each friend pays: ___________

Decimal Operations 6

Multiplying and Dividing Decimals Homework 1. 63.14 x 2.08 = _______

4. 6804 ÷ 6.5 = _______

2. 3746 ÷ 0.71 = _______

5. 18.65 x 6.8 = _______

3. 16.92 x 8.4 = _______

6. 7366 ÷ 0.65 = ______

7.

80.1 x 2.8

10. 0.11 494.8

8.

5.9 x 3.9

11. 0.46 14.96

9.

28.2 x 6.7

12. 1.3 980.4

13. The regular price on a box of ice-cream sandwiches is $6.00. They are on sale for half off. If Mr. Campbell buys 10 boxes, what is the total cost of the ice cream sandwiches before tax? Total cost: ___________ 14. Sam bought 5 rolls of ribbon to wrap presents. Each roll contains 10.5 meters of ribbon. If each present uses 1.4 meters of ribbon, how many presents can they wrap? Amount of presents: ___________

Don’t forget to check your HW online! My score is ___/14

Decimal Operations 7

Decimal Operations Study Guide Solve and circle your answer. 1. 21.8 – 19.43

2. 65.8 - 9.42

6. 76.7 x 8.9

7. 846.2 ÷ 0.52

3. 26.93 + 7.178

4.

39.5 + 18.49

8. 4.116.1

5. 5.16 x 8.33

Use the box on the right to solve. 9. John has $10. Can he buy 4 hamburgers? ___________ 10. Julie has $5. Can she buy 7 candy bars? ___________ 11. Which is cheaper, 3 drinks or 2 orders of fries? ___________ 12. With $7, can Fitz buy one of everything? ___________

Prices Hamburger: $2.95 Drink: $1.35 Fries: $1.95 Candy Bar: $0.79

Decimal Operations 8 Michael purchased three items at the hardware store. The items were $7.99, $8.75, and $12.80. How much money did Thomas spend?

13. Estimate: ___________ 14. Actual: ___________

Eden pays $35.67 each month to the bank for a loan. If she pays this for 24 months, how much money will she pay in all?

15. Estimate: ___________ 16. Actual: ___________ 17. Based on this table, what is the cost to have 3 hours of vacuuming, 2 hours of dusting and 3 hour of mopping floors?

18. Jessica has four 32.9 ounce jars of spaghetti sauce. It takes 5.68 ounces of spaghetti sauce to make one pizza. If Kelly uses all 4 jars of spaghettis sauce, what is the maximum amount of pizzas she can make?

19. Aidan’s model car travels approximately 4.7m every trip around the track. About how many meters has the car traveled after 26 trips around the track?

20. Hannah bought three CDs for $12.34, $15.59, and $9.36, including sales tax. She gave the clerk $40.00. What is the amount of change Amy should receive?

Decimal Operations 9 21. In her shopping cart, Amelia has 3 pounds of oranges at $0.89 per pound, 5 cans of soup at $0.99 per can, and 1 gallon of ice cream at $4.99 per gallon. What is the total cost of the items in her shopping cart?

22. Max bought 5 rolls of tape to seal boxes. Each roll contains 32.9 meters of tape. He uses 1.2 meters of this tape to seal each box. What is the total number of boxes Max can seal with these 5 rolls of tape?

23. Ava wants to buy a camera that costs $328, including tax. She has saved $9.25 each week for the past 11 weeks. How much more money does Ava need to purchase the camera?

24. Fourteen bags of popcorn cost $46.50, how much money does Kodi need if he wants to buy one bag of popcorn?

Don’t forget to check your HW online! My score is ___/24

Decimal Operations 10

Extra Practice: Making Change

1. Kelly bought a bag of cookies. How much change did she get from a $1.00 bill?

6. Brian bought 2 cakes and a pie. How much change did he get from a $10.00 bill?

2. Carlos bought a cake. How much change did he get from a $5.00 bill?

7. Carol bought 3 pies and 2 cakes. How much change did she get from a $20.00 bill?

3. Stacy bought a pie. How much change did she get from a $10.00 bill?

8. Kim bought 2 bags of cookies and a pie. How much change did she get from a $10.00 bill?

4. Paula bought a bag of cookies and a cake. How much change did she get from a $10.00 bill?

9. Afifeh bought a pie and a bag of cookies. How much more did she pay for the pie?

5. Seung bought 2 bags of cookies. How much change should he get from a $5.00 bill?

10. Todd bought a bag of cookies and a cake. Noah bought a pie. How much more did Todd spend?