1.
What kind of number system is commonly used in the United States?
Correct Answer
B. Decimal
Explanation
The commonly used number system in the United States is decimal. Decimal system is based on the number 10, where each digit position represents a power of 10. This system uses ten digits from 0 to 9, and numbers are expressed using these digits along with the decimal point. It is widely used in everyday life, commerce, and mathematics in the United States.
2.
Place value is not used in which numeric system?
Correct Answer
D. Roman
Explanation
Roman numerals do not use place value. In the Roman numeral system, numbers are represented by combining different letters, and the value of each letter does not depend on its position within the number. This is different from the other systems listed, such as Arabian, Cyrillic, and Decimal, where the position of a digit determines its value.
3.
The number 0 is not used in which numeric system?
Correct Answer
A. Roman
4.
A telemarketer must call 157 U.S. phone numbers every shift to meet their quota. How many buttons will have to be pushed to make 157 long-distance calls?
Correct Answer
B. 1727
Explanation
To make a long-distance call, the telemarketer needs to push several buttons on their phone. Each long-distance call requires the telemarketer to dial the area code, the 3-digit prefix, and the 4-digit phone number. This means that for each call, the telemarketer needs to push a total of 10 buttons. Therefore, to make 157 long-distance calls, the telemarketer will have to push 1570 buttons. However, the question asks for the number of buttons to make the calls, not the number of calls themselves. Since each call requires 10 buttons to be pushed, the correct answer is 1570 divided by 10, which equals 157. Therefore, the correct answer is 1727.
5.
A newborn weighs 3,459 grams. There are 453.59 grams per pound. What is the infant's weight in pounds and ounces?
Correct Answer
A. 7 lb 10 oz
Explanation
To convert the weight of the newborn from grams to pounds and ounces, we divide the weight in grams by the number of grams per pound (453.59). This gives us the weight in pounds. The remainder after dividing represents the weight in ounces. In this case, when we divide 3,459 grams by 453.59 grams per pound, we get approximately 7.63 pounds. The remainder is 10 ounces. Therefore, the infant's weight is 7 pounds 10 ounces.
6.
What temperature in Celsius are 98.6 degrees Fahrenheit? (Enter numeric value only. If rounding is necessary to round to the whole number.) _________
Correct Answer
A. 37
Explanation
The correct answer is 37. To convert Fahrenheit to Celsius, you can use the formula: Â°C = (Â°F - 32) * 5/9. Plugging in 98.6 for Â°F, the calculation would be (98.6 - 32) * 5/9 = 37.
7.
A nurse works in a military hospital from 1300 to 2000. What time of the day does this nurse work?
Correct Answer
C. Early afternoon to bedtime
Explanation
The nurse works from 1300 to 2000, which corresponds to the time period between early afternoon to bedtime.
8.
A nurse is reviewing the daily intake and output (I&O) of a patient consuming a clear diet. The drainage bag denotes a total of 1,000 mL for the past 24 hours. The total intake is:
2 8oz cups of coffee
1 16-oz serving of clear soup
1 pint of water consumed throughout the day
How much is the deficit in milliliters?
(Enter numeric value only. If rounding is necessary round to the whole number.)
____________
Correct Answer
A. 440
Explanation
The nurse is reviewing the patient's daily intake and output. The drainage bag indicates that the patient has eliminated 1,000 mL of fluid in the past 24 hours. The total intake includes 2 8oz cups of coffee (approximately 480 mL), 1 16-oz serving of clear soup (approximately 480 mL), and 1 pint of water (approximately 480 mL). To calculate the deficit, we subtract the total intake (approximately 1,440 mL) from the total output (1,000 mL), which gives us a deficit of 440 mL.
9.
A woman received a bottle of perfume as a present. The bottle contains 1/2 oz of perfume. How many milliliters is this? (Enter numeric value only. If rounding is necessary to round to the whole number.)
_________
Correct Answer
A. 15
Explanation
To convert ounces to milliliters, we need to know the conversion factor. 1 ounce is equal to approximately 29.57 milliliters. In this case, the bottle contains 1/2 ounce of perfume, so we can calculate the milliliters by multiplying 1/2 by 29.57. The result is approximately 14.79 milliliters. Since we are asked to round to the nearest whole number, the answer is 15 milliliters.
10.
The metric system of measurement was developed in France during Napoleonic reign. It is based on what multiplication factor?
Correct Answer
C. 10
Explanation
The metric system of measurement was developed in France during Napoleonic reign and is based on a multiplication factor of 10. This means that each unit of measurement is 10 times larger or smaller than the adjacent unit, making it a decimal-based system. This factor allows for easy conversion between units and simplifies calculations in various fields such as science, engineering, and everyday life.
11.
How many meters are in a kilometer?
(Enter numeric value only.) __________
Correct Answer
A. 1000
Explanation
There are 1000 meters in a kilometer. This is because the prefix "kilo-" in the metric system represents a factor of 1000. Therefore, when converting from kilometers to meters, you multiply the number of kilometers by 1000 to get the equivalent distance in meters.
12.
How many grams are in a kilometer?
(Enter numeric value only.) ___________
Correct Answer
B. 1000
Explanation
There are 1000 grams in a kilogram, not a kilometer. The question is asking for the number of grams in a kilometer, which is not a valid conversion.
13.
To convert pounds to kilograms, what factor is used?
Correct Answer
A. 2.2
Explanation
To convert pounds to kilograms, the factor used is 2.2. This means that to convert a given weight in pounds to kilograms, you would multiply it by 2.2. For example, if you have 10 pounds, you would multiply it by 2.2 to get the equivalent weight in kilograms, which is 22 kilograms.
14.
A teacher's aide is preparing a snack for the class. In order to prepare the powdered drink, the aide must convert the directions to the metric. The directions say, "Dilute contents of the package in 2 quarts of water." The aide has a measuring device marked in liters. How many liters of water should be used? (Enter numeric value only. If rounding is required, round to the nearest tenth.) __________
Correct Answer
A. 1.9
Explanation
The directions say to dilute the contents of the package in 2 quarts of water. To convert quarts to liters, we can use the conversion factor 1 quart = 0.946 liters. Therefore, 2 quarts is equal to 2 * 0.946 = 1.892 liters. Rounding to the nearest tenth, the aide should use 1.9 liters of water.
15.
How many milliliters are in 1 liter?
Correct Answer
D. 1,000
Explanation
There are 1,000 milliliters in 1 liter. This is because the metric system follows a pattern where each unit is 1,000 times larger than the unit below it. Therefore, since there are 1,000 milliliters in a liter, the correct answer is 1,000.
16.
A seamstress is measuring a model for a new dress.The tape measure is marked in centimeters. The seamstress needs to convert that measurement into inches. If the model's waist measurement is 65.4 centimeters, what is that in inches?
Correct Answer
A. 25.74
Explanation
The correct answer is 25.74. To convert centimeters to inches, we need to divide the measurement in centimeters by 2.54. Therefore, 65.4 centimeters divided by 2.54 equals 25.74 inches.