Metric Conversions for Nursing

Correct Answer: B

Rationale: To convert from kilograms to grams, you multiply the value in kilograms by 1000 since there are 1000 grams in one kilogram. Therefore, 0.0345 kg * 1000 = 34.5 grams. Choice B (34.5 grams) is correct. Choices A, C, and D are incorrect because they do not correctly convert kilograms to grams. Choice A is off by a factor of 10, choice C is off by a factor of 100, and choice D is off by a factor of 1000.

Correct Answer: B

Rationale: The correct answer is B: 3,450 mm. To convert meters to millimeters, we know that 1 meter is equal to 1,000 millimeters. Therefore, to find how many millimeters are in 3.45 meters, we multiply 3.45 by 1,000, which equals 3,450 mm. Incorrect choices: A: 345 mm - Incorrect because it is the result of multiplying 3.45 by 100 (not 1,000). C: 345,000 mm - Incorrect as it is the result of incorrectly multiplying 3.45 by 100,000. D: 3.45 mm - Incorrect as it is the original amount in meters, not the converted amount in millimeters.

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 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: B

Rationale: To convert grams to ounces, we need to know that 1 ounce is approximately equal to 28.35 grams. Therefore, 1 gram is equal to 1/28.35 ounces, which is approximately 0.035 ounces. So, the correct answer is B. Incorrect Choices: A: 0.015 ounces - This is too low, as 1 gram is closer to 0.035 ounces. C: 0.045 ounces - This is too high, as 1 gram is closer to 0.035 ounces. D: 0.055 ounces - This is also too high, as 1 gram is closer to 0.035 ounces.