Metric Conversions for Nursing

Correct Answer: B

Rationale: To convert pounds to ounces, you need to know that 1 pound is equal to 16 ounces. So, to convert 0.29 pounds to ounces, you multiply 0.29 by 16. This gives you 4.64 ounces, which is the correct answer (B). Choices A, C, and D are incorrect because they do not correctly apply the conversion factor of 16 ounces per pound.

Correct Answer: A

Rationale: To convert grams to milligrams, you need to multiply by 1000 since 1 g = 1000 mg. Therefore, 0.04 g * 1000 = 40 mg. Thus, the correct answer is A: 40 mg. Choice B is incorrect as it is 10 times more than the correct answer. Choice C is incorrect as it is 10 times less than the correct answer. Choice D is incorrect as it is 100 times less than the correct answer.

Correct Answer: B

Rationale: To convert millimeters to meters, we divide by 1000 since there are 1000 millimeters in a meter. Therefore, 3.54 mm in meters is 3.54/1000 = 0.00354 meters. Choice B is correct as it correctly converts 3.54 mm to meters. Choices A, C, and D are incorrect because they do not apply the correct conversion factor. Choice A incorrectly moves the decimal point two places to the left instead of three. Choice C incorrectly multiplies by 10 instead of dividing by 1000. Choice D incorrectly moves the decimal point one place to the left instead of three.

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: B

Rationale: To convert ounces to milliliters, we need to know that 1 ounce is approximately equal to 29.57 milliliters. Therefore, the closest option to this conversion is B: 30 ml. Choices A, C, and D are not correct as they do not match the accurate conversion rate. A (20 ml) is too low, C (40 ml) is too high, and D (50 ml) is also too high. Therefore, the correct answer is B (30 ml) as it is the closest approximation to the actual conversion rate of 1 ounce to milliliters.