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Decimal Operations

Decimal Operations. Review. Which expression can be used to find the maximum number of 0.2 meter lengths of rope that can be cut from a 6.5 meter length of rope? A. 0.2 / 6.5 B. 0.2 + 6.5 C. 6.5 / 0.2 D. 6.5 X 0.2.

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Decimal Operations

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  1. Decimal Operations Review

  2. Which expression can be used to find the maximum number of 0.2 meter lengths of rope that can be cut from a 6.5 meter length of rope? • A. 0.2 / 6.5 • B. 0.2 + 6.5 • C. 6.5 / 0.2 • D. 6.5 X 0.2

  3. Mrs. Gutierrez bought 2 dozen cans of soda priced at 6 cans for $1.98 and 18 bottles of water priced at 6 bottles for $2.16. What is the total amount she spent, not including tax, on soda and bottled water? • $6.48 • $7.92 • $14.40 • $16/56

  4. Three roommates agreed to split the cost of food and rent evenly. Last month they spent a total of $349.66 for food and $365 for rent. Find the total amount that each of the 3 roommates paid.

  5. A jeweler bought 2 meters of silver chain. She used 20 centimeters to make a bracelet and 60 centimeters to make a necklace. How many meters of silver chain did she have left? (Hint: 1 meter = 100 centimeters)

  6. A certain bacterium measures approximately 0.000015 millimeter in length. How is this length expressed in scientific notation? • 1.5 x 10-5mm • 1.5 x 10-4 mm • 0.15 x 105 mm • 15 x 104 mm

  7. A camp leader plans to buy 3 hot dogs per person for a cookout. If 30 people are going on the cookout and if hot dogs cost #3.99 per package, what other information is needed to find the cost of the hot dogs? • A. The number of meals at which hot dogs will be served • B. The cost of mustard and relish • C. The number of people who eat hot dogs • D. The number of hot dogs in a package.

  8. The diameter of a blood cell is measured in micrometers. A micrometer is 0.0000001 meter. Write this number in scientific notation.

  9. Mr. Flores ran a 26.1 mile marathon last year. He completed the race in 5 hours 6 minutes. This year Mr. Flores would like to run the same marathon in 4.5 hours. How many miles per hour should Mr. Flores run to complete the marathon in 4.5 hours? • 5.8 mph • 6.2 mph • 11.8 mph • 5.6 mph

  10. Cody’s parents bought a big-screen television for $1,099.99 and a DVD player for $99.99, including tax. Cody’s parents plan to pay the total amount in 18 equal payments. What is a reasonable amount for each monthly payment?

  11. On Monday Cornelius’s mother gave him school money for the week. He spent $2,80 for lunch every day for 5 school days. He paid a $0.75 book fine at the library and bought school supplies for $3.50. Cornelius had $1.75 left at the end of the school week. Write an expression to determine how much money Cornelius’s mother gave him for the week.

  12. The sun’s core temperature reaches close to 2.7 x 107 degrees Fahrenheit. Which of the following represents this temperature in standard notation. • 270,000 • 2,700,000 • .00000027 • 27,000,000

  13. Solve • 65.05 / .05

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