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Homework: Unit Reasoning, Measurement and Accuracy

1) You are measuring the dimensions of the floor in your bedroom because you are planning to buy new carpet. Which unit of measure is the most appropriate to use in this situation?

|A) |square feet |

|B) |square miles |

|C) |square inches |

|D) |square centimeters |

2) Sandra collected data about the amount of rainfall a city received each week. Which value is MOST LIKELY part of Sandra's data?

|A) |3.5 feet |

|B) |3.5 yards |

|C) |3.5 inches |

|D) |3.5 meters |

3) Sarah's parents are filling their swimming pool. Her pool holds 22,000 gallons. It takes 16 hours to fill. What unit would you use to represent the rate that water is flowing into the pool?

|A) |hours |

|B) |gallons |

|C) |gallons per hour |

|D) |gallons per minute |

4) Sarah's parents are filling their swimming pool. She wants to know how long it will take. What unit is best used to give the rate of the water flowing into the pool? Her pool is 22,000 gallons. What unit will the answer to her question be answered in?

|A) |cups per hour; hours |

|B) |gallons per hour; hours |

|C) |cups per minute ;minutes |

|D) |gallons per second; seconds |

5) Michael and LeBron are going on a road trip from Cleveland to Miami. They make several stops along the way. The distance is 1,250 miles and it takes them 20 hours of driving. If you were going to find their average speed, what unit would your answer have?

|A) |miles |

|B) |hours |

|C) |miles per hour |

|D) |hours per mile |

6) What is the most appropriate unit of measure for the distance between Atlanta, GA and Athens, GA?

|A) |feet |

|B) |meters |

|C) |miles |

|D) |yards |

7) Which unit is most appropriate for measuring the amount of liquid you drink in a day?

|A) |kiloliters |

|B) |liters |

|C) |megaliters |

|D) |milliliters |

8) Which unit of measurement would be most appropriate to measure the distance between Atlanta, GA and Nashville, TN?

|A) |centimeters |

|B) |inches |

|C) |kilometers |

|D) |yards |

9) What is a good unit to use to measure the area of a room in a house?

|A) |square feet |

|B) |square miles |

|C) |square inches |

|D) |square millimeters |

10)

|Sarah and Kelvin are calculating the area of a circle with a radius of 52 cm. Kelvin uses 3.14 for pi when calculating this area|

|while Sarah uses the pi button on her calculator. Kelvin gets a solution of 8,490.56 cm2, and Sarah gets a solution of 8,494.87 |

|cm2. |

Who has the most accurate solution? Why?

|A) |Both answers are equally accurate. |

|B) |Kelvin; He did not have to round his answer. |

|C) |Neither answer is accurate as pi or 3.14 is not in the formula for the area of a circle. |

|D) |Sarah; The pi button on the calculator gives a more accurate representation for pi than 3.14. |

11)

[pic]

The MOST precise measurements this ruler can give are to the nearest

|A) |inch. |

|B) |half inch. |

|C) |eighth inch. |

|D) |quarter inch. |

12) Choose the situation in which the use of exact numbers is appropriate.

|A) |paying your power bill |

|B) |adding bacon bits to a salad |

|C) |buying hamburgers for a cookout |

|D) |ordering flyers to hand out at a political rally |

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