Math Assignment week 1

Part 1

6. Hershey’s 6-oz milk chocolate almond bar contains 25 milligrams of caffeine. A 20-oz bottle of Coca-Cola has 32 more

milligrams of caffeine than the Hershey bar. How many milligrams of caffeine does the 20-oz bottle of Coca-Cola have?

8. Lou arranges 504 entries on a spreadsheet in a rectangular array that has 36 rows. How many entries are in each row?

10. In 2011, there were 984 rotary rigs drilling for crude oil in the United States. This was 687 more rigs than were active in

2007. Find the number of active rotary oil rigs in 2007.

48. The U.S. Bureau of Labor Statistics predicts that between 2010 and 2020, there will be 484,600 more new jobs created for

postsecondary teachers and elementary teachers than there will be for secondary teachers. How many new jobs will be

created for secondary teachers between 2010 and 2020?

Solve

52. 80 − 24 · 15 ÷ (7 · 5 − 45 ÷ 3)

54. 27 ÷ 25 · 24 ÷ 22

60. 72 ÷ 6 – {2 · [9 – (4 · 2)]}

Part 2

Solve

68. 2.48 ÷ (1 – 0.504) ÷ 24.3 – 11 · 2

70. 6 · 0.9 + 0.1 ÷ 4 – 0.23

72.

74.

14. Lot A measures 250.1 ft by 302.7 ft. Lot B measures 389.4 ft by 566.2 ft. What is the total area of the two lots?

18. Claire bought a copy of the book Make Way for Ducklings for her daughter for $16.95 plus $0.85 sales tax. She paid for it

with a $20 bill. How much change did she receive?

22. Rita receives a gross pay (before deductions) of $495.72. Her deductions are $59.60 for federal income tax, $29.00 for

FICA, and $29.00 for medical insurance. What is her take-home pay?

30. A person weighing 170 lb burns 8.6 calories per minute while mowing a lawn. One must burn about 3500 calories in order

to lose 1 lb. How many pounds would be lost by mowing for 2 hr? Round to the nearest tenth.

32. Zachary worked 53 hr during a week one summer. He earned $7.50 per hour for the first 40 hr and $11.25 per hour for

overtime (hours exceeding 40). How much did Zachary earn during the week?

Part 3

Solve

80.

82.

86.

88.