Title: Unit 6 Quiz
Course: Technical Math for Industry

Q: How many feet are in 42 inches?
- 504 feet (Incorrect. You may have multiplied 42 inches by . You need to multiply 42 inches by to get the correct answer.)
- feet (Incorrect. You may have multiplied 42 inches by . You need to multiply 42 inches by to get the correct answer.)
- feet (Correct.)
- 14 feet (Incorrect. You may have been thinking of converting feet to yards and multiplied by . You need to multiply by to get the correct answer.)
A: feet

Q: How many inches are in 4 feet 3 inches?
- 48 inches (Incorrect. You may have forgotten to add the 3 inches after you converted 4 feet to inches.)
- 51 inches (Correct. and)
- 43 inches (Incorrect. You may have multiplied 4 feet by and then added 3 inches. You need to multiply by and then add 3 inches.)
- inches (Incorrect. You may have multiplied 4 feet by and then added 3 inches. You need to multiply by and then add 3 inches.)
A: 51 inches

Q: Fiona is going to jog once around the block she lives on. The block is rectangular, and it is 180 yards long and 200 feet wide. How far will Fiona jog (in feet)?
- 740 feet (Incorrect. You may have correctly converted 180 yards to 540 feet, but then added the lengths of only two sides of the rectangle instead of the lengths of all four sides.)
- 1,480 feet (Correct. To find the perimeter of a rectangle, you can use the formula .)
- 760 feet (Incorrect. You may have treated both of the measurements as if they were in feet. You should convert both of the measurements to feet and then use the formula for the perimeter of a rectangle.)
A: 1,480 feet
If wrong: Incorrect. You may have converted the 200 feet to , then found the total perimeter in yards. You need to convert the 180 yards to feet, then find the total perimeter.

Q: How many pounds are in 56 ounces?
- 7 (Incorrect. You may have divided by 8. There are 16 ounces in 1 pound, not 8.)
- 3.5 (Correct.)
- 5.6 (Incorrect. You may have divided by 10. There are 16 ounces in 1 pound, not 10.)
- 4 (Incorrect. You may have rounded up to the nearest whole number. The question requires an exact answer.)
A: 3.5

Q: How many ounces are in pounds and 4 ounces?
- ounces (Incorrect. This is the total weight of 4 pounds and ounces, not pounds and 4 ounces.)
- ounces (Incorrect. You may have multiplied the pounds by before adding the pounds to the 4 ounces. You should multiply by to get the correct number of ounces in any number of pounds.)
- 60 ounces (Correct. . Convert the pounds to ounces: ounces)
- ounces (Incorrect. You cannot add the and the 4 because they refer to different units. You must convert the pounds to ounces and then add the second weight.)
A: 60 ounces

Q: You are mailing a package that weighs 8 pounds, and sending it first class. The post office charges $0.44 for the first ounce, and charges $0.20 for each additional ounce. How much is the total cost to mail this package?
- $1.84 (Incorrect. You may have calculated the cost based on a weight of 8 ounces, instead of 8 pounds. Convert the pounds to ounces and then calculate the cost.)
- $13.04 (Incorrect. You may have thought there were 8 ounces in 1 pound, and calculated the cost based on a weight of 64 ounces. There are 16 ounces in one pound.)
- $25.84 (Correct. Convert pounds to ounces: Calculate the cost:)
- $26.04 (Incorrect. You may have correctly converted 8 pounds to 128 ounces, but added $0.20 for all 128 ounces to the $0.44. The $0.20 cost is for each additional ounce.)
A: $25.84

Q: How many fluid ounces are there in 6 quarts?
- 24 ounces (Incorrect. You may be thinking of the number of cups in 6 quarts. Multiply by 8 to get the number of fluid ounces.)
- 192 ounces (Correct.)
- 48 ounces (Incorrect. This is the number of ounces in 6 cups, not 6 quarts.)
- quart (Incorrect. This is the number of quarts in 6 fluid ounces.)
A: 192 ounces

Q: How many fluid ounces are there in 3 pints and 8 fluid ounces?
- 11 (Incorrect. You may have just added 3 and 8. You must first convert the pints to ounces, and then add the second amount.)
- 32 (Incorrect. You may have thought that there were 8 fluid ounces in a pint. There are 16 fluid ounces in a pint.)
- 56 (Correct. . So there are fluid ounces.)
A: 56
If wrong: Incorrect. This is the total number of pints in the two amounts. You need to find the total number of fluid ounces.

Q: A motor oil retailer needs to fill 50 one quart bottles, and he has two tanks: one that contains 12 gallons of oil and one that contains 2 gallons of oil. Which will he need to fill the bottles?
- The 2 gallon tank is enough. (Incorrect. He needs 50 quarts. The 2 gallon tank only holds 8 quarts, which is not enough.)
- The 2 gallon tank is not enough, but the 12 gallon tank is enough. (Incorrect. He needs 50 quarts. The 12 gallon tank only holds 48 quarts, which is not enough.)
- Even both tanks will not be enough. (Incorrect. He needs 50 quarts. The 12 gallon tank holds 48 quarts and the 2 gallon tank holds 8 quarts, so together they hold more than 50 quarts.)
- He will need both tanks. (Correct. He needs 50 quarts. The 12 gallon tank holds 48 quarts and the 2 gallon tank holds 8 quarts, so together they hold more than 50 quarts.)
A: He will need both tanks.

Q: Which unit of measurement is part of the metric system?
- quart (Incorrect. The quart is a unit of volume in the U.S. customary system.)
- foot (Incorrect. The foot is a unit of length in the U.S. customary system.)
- pound (Incorrect. The pound is a unit of weight in the U.S. customary system.)
- kilogram (Correct. The basic unit of mass in the metric system is the gram. Other words containing "gram" are also units of mass in the metric system.)
A: kilogram

Q: How many grams are in 1 kilogram?
- 0.001 (Incorrect. One kilogram is 1,000 times larger than one gram, not 1,000 times smaller.)
- 0.01 (Incorrect. There are 10 grams in 1 dekagram, 10 dekagrams in 1 hectogram, and 10 hectograms in 1 kilogram, so you would multiply to find the number of grams in 1 kilogram.)
- 100 (Incorrect. There are 10 grams in 1 dekagram, 10 dekagrams in 1 hectogram, and 10 hectograms in 1 kilogram, so you would multiply to find the number of grams in 1 kilogram.)
- 1,000 (Correct. There are 10 grams in 1 dekagram, 10 dekagrams in 1 hectogram, and 10 hectograms in 1 kilogram, so you would multiply to find the number of grams in 1 kilogram.)
A: 1,000

Q: A scientist wants to measure out 0.62 liters of a liquid, but she can only find a beaker that measures volume in centiliters. How many centiliters should she measure to equal 0.62 liter?
- 62 centiliters (Correct. A liter is 100 times larger than a centiliter, so move the decimal point 2 places to the right.)
- 620 centiliters (Incorrect. You may have thought a liter was 1,000 times larger than a centiliter and moved the decimal point 3 places to the right, but a liter is only 100 times larger than a centiliter.)
- 6.2 centiliters (Incorrect. You may have thought a liter was only 10 times larger than a centiliter and moved the decimal point 1 place to the right, but a liter is 100 times larger.)
- 0.0062 centiliter (Incorrect. You may have thought a liter was smaller than a centiliter and moved the decimal point to the left, instead of to the right.)
A: 62 centiliters

Q: Lola takes the train from Paris to Nice. The distance between the two cities is about 921,000 meters. If the train travels at a speed of 307 kilometers per hour, how long will it take Lola to travel from Paris to Nice?
- hour (Incorrect. You may have correctly converted the distance between cities to 921 kilometers, and then solved the proportion . The correct equation would be .)
- 300 hours (Incorrect. You may not have converted correctly from meters to kilometers.)
- 3 hours (Correct. The distance between the cities is , or 921 kilometers.)
- 3,000 hours (Incorrect. You may have simply divided 921,000 by 307. You must first convert the distance between cities to kilometers. Then set up a proportion or do division.)
A: 3 hours

Q: Bobby's mom sets a small pot of water on the stove and lights the burner. Ten minutes later, Bobby notices small bubbles and sees that the water is almost boiling. Which of the following could possibly be the temperature of the water in the pot?
A: (a choice with no text)
If right: Correct. The boiling point of water is Celsius, and is just below this temperature, so this could be the temperature of the water.
If wrong: Incorrect. The boiling point of water in degrees Celsius is , so this is above the boiling point. At this temperature the water would have turned to steam and could not be in the pot.
If wrong: Incorrect. You may be confusing Celsius and Fahrenheit. While would be above the boiling point of water (which is ), is well below the boiling point of water (which is ).
If wrong: Incorrect. You may be confusing Celsius and Fahrenheit. While would be close to the boiling point of water (which is ), is far below the boiling point of water (which is ).

Q: In science class, Richard learns that a substance has a boiling point of Fahrenheit. His teacher asks him to convert this temperature to degrees Celsius. What is the boiling point of petrol in degrees Celsius?
A: (a choice with no text)
If wrong: Incorrect. You used the ratio in the conversion formula instead of .
If wrong: Incorrect. You added 32 to the degrees Fahrenheit instead of subtracting 32 when using the conversion formula.
If right: Correct. or
If wrong: Incorrect. You used the wrong formula. To convert Fahrenheit to Celsius, the formula is .