Metric Conversions for Nursing

Correct Answer: B

Rationale: To convert 0.16 inches to a fraction, we can write it as 16/100 or 4/25. Both 16/100 and 4/25 are equivalent to 0.16. Therefore, the correct answer is B: 0.16 inches. Option A (0.016 inches) is incorrect as it is one-tenth of the correct value. Option C (1.6 inches) is incorrect as it is ten times the correct value. Option D (16 inches) is incorrect as it is one hundred times the correct value.

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: A

Rationale: The correct answer is A: 100 g. To convert kilograms to grams, you need to multiply by 1000 since there are 1000 grams in a kilogram. Therefore, 0.1 kg x 1000 = 100 g. Choice B (10 g) is incorrect as it represents 0.01 kg. Choice C (1 g) is incorrect as it represents 0.001 kg. Choice D (0.1 g) is incorrect as it is the same value as the original measurement in kilograms.

Correct Answer: B

Rationale: To convert milliliters to liters, we need to divide by 1000 since 1 liter is equal to 1000 milliliters. So, 500 milliliters divided by 1000 equals 0.5 liters, making choice B the correct answer. Choice A (0.05 liters) is incorrect as it is one decimal place off. Choice C (5 liters) and choice D (50 liters) are both significantly higher values and do not align with the conversion factor from milliliters to liters.

Correct Answer: A

Rationale: The correct answer is A: 10^-15 meters. 1 femtometer is equal to 10^-15 meters. This is because the prefix "femto-" represents 10^-15. Therefore, one femtometer is equivalent to 10^-15 meters. Choice B: 10^-9 meters is incorrect as this corresponds to the prefix "nano-" not "femto-". Choice C: 10^-12 meters is incorrect as this corresponds to the prefix "pico-" not "femto-". Choice D: 10^-18 meters is incorrect as this corresponds to the prefix "atto-" not "femto-". In summary, the correct answer is A because 1 femtometer is equal to 10^-15 meters, as per the corresponding SI prefix.