Nursing Metric Conversion

Correct Answer: A

Rationale: The correct answer is A: millimeter. In the metric system, 'mm' stands for millimeter, which is a unit of length equal to one thousandth of a meter. This is the correct answer because "milli-" is a prefix in the metric system that denotes one thousandth. Megabyte (B) is a unit of digital information storage, not length. Millipede (C) refers to a type of arthropod, not a unit of measurement. Metered (D) is not a recognized unit in the metric system for length.

Correct Answer: C

Rationale: To find the result of multiplying 0.15 by 3, we simply multiply the two numbers together. 0.15 * 3 = 0.45. This is because when you multiply a decimal by a whole number, you multiply the decimal part as usual and then place the decimal point in the product according to the total number of decimal places in the numbers being multiplied. In this case, 0.15 has two decimal places, and 3 is a whole number, so the product is 0.45. Choice A (0.05) is incorrect as it is the result of multiplying 0.15 by 0.33, not 3. Choice B (0.15) is incorrect as it is the original number being multiplied, not the result. Choice D (0.45) is incorrect as it is the same as the correct answer, but repeated in the choices, which usually does not happen in multiple-choice questions.

Correct Answer: A

Rationale: To convert 0.5 L to mL, you multiply by 1000 since there are 1000 mL in 1 L. 0.5 L * 1000 = 500 mL. Therefore, the correct answer is A: 500 mL. Option B, C, and D are incorrect as they do not follow the correct conversion factor.

Correct Answer: B

Rationale: The correct answer is B: 5280 feet in one mile. This is because 1 mile is equivalent to 5280 feet. This conversion is a standard unit of measurement in the Imperial system. Choice A, 5000 feet, is too low and does not accurately represent the length of a mile. Choice C, 5300 feet, and choice D, 5500 feet, are both higher than the actual value of 5280 feet, making them incorrect. To convert miles to feet, we multiply by the conversion factor of 5280.

Correct Answer: A

Rationale: To convert milligrams (mg) to micrograms (mcg), you need to multiply by 1000 since there are 1000 micrograms in 1 milligram. So, 0.025 mg x 1000 = 25 mcg, which is option A. Option B is incorrect as it incorrectly multiplies by 10. Option C is incorrect as it incorrectly divides by 10. Option D is incorrect as it incorrectly divides by 100. Always remember the conversion factor of 1000 when converting between milligrams and micrograms.