Metric Conversions for Nursing

Correct Answer: A

Rationale: The correct answer is A: centimeter. 'cm' stands for centimeter in the metric system. 'Centi' is a prefix that means one hundredth, so centimeter represents one hundredth of a meter. Choice B, cubic meter, is incorrect because 'cm' does not refer to volume. Choice C, cord, is a unit of measurement for stacked firewood and is not related to 'cm.' Choice D, centi, is a prefix used to indicate one hundredth, but it is not the complete unit itself.

Correct Answer: A

Rationale: To convert liters to milliliters, you multiply by 1000 because 1 liter = 1000 milliliters. Therefore, 2 liters x 1000 = 2000 milliliters. This is why choice A (2000 mL) is correct. Choices B, C, and D are incorrect because they do not correctly convert 2 liters to milliliters using the conversion factor of 1000. Choice B (20,000 mL) is 10 times the correct answer, choice C (200 mL) is 10 times less, and choice D (2 mL) is 1000 times less than the correct answer.

Correct Answer: D

Rationale: The correct answer is D. In the metric system, 1 gram is equal to 1000 milligrams, not 100 milligrams. This is because the prefix "milli-" denotes a factor of 1/1000. Therefore, the conversion should be 1 g = 1000 mg. Choices A, B, and C are correct conversions as they follow the standard metric system prefixes: centi- (1/100), deci- (1/10), and kilo- (1000), respectively.

Correct Answer: B

Rationale: To divide 0.4 by 40, we can rewrite 0.4 as 4/10. Then, we divide 4 by 10 to get 0.1. So, 0.4 divided by 40 equals 0.1. Simplifying 0.1 as a fraction gives 1/10. To further simplify, we can divide both the numerator and denominator by 10 to get 1/1000, which is choice B. Choices A, C, and D are incorrect as they do not accurately represent the division of 0.4 by 40.

Correct Answer: A

Rationale: To convert kilometers to meters, you need to multiply by 1000 since 1 kilometer is equal to 1000 meters. So, 1.5 kilometers x 1000 = 1500 meters, which is choice A. Choice B (150 meters) is incorrect as it is the result if you mistakenly multiplied by 100 instead of 1000. Choice C (15,000 meters) is incorrect as it is the result of multiplying by 10,000. Choice D (1.5 meters) is incorrect as it represents the original distance in meters, not the converted value.