Metric Conversions for Nursing

Correct Answer: B

Rationale: The correct answer is B: 100 cm. There are 100 centimeters in one meter because the metric system is based on units of 10. 1 meter is equivalent to 100 centimeters. Choice A is incorrect because 1/10 cm is not a valid conversion from meters to centimeters. Choice C is incorrect as 10 cm is the conversion from decimeters to centimeters, not meters. Choice D is incorrect because 1000 cm is the conversion from meters to millimeters, not centimeters. Therefore, the correct choice is B as it accurately reflects the conversion from meters to centimeters in the metric system.

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: A

Rationale: The correct answer is A: gram. In the metric system, 'g' stands for gram, which is a unit of mass. This is the correct answer because gram is the standard unit of mass in the metric system, commonly used for measuring small weights. The other choices are incorrect because: B: grain is a unit of weight used in the imperial system, not the metric system. C: goose is not a unit of measurement in any system. D: grammage refers to the weight per unit area of paper or similar material, not a standard unit of mass in the metric system.

Correct Answer: A

Rationale: To convert milligrams to micrograms, you need to multiply by 1000. So, 0.15 mg x 1000 = 150 mcg. This is why choice A (150 mcg) is correct. Choice B (15 mcg) is incorrect as it doesn't account for the conversion factor. Choice C (1.5 mcg) is incorrect as it is off by a factor of 10. Choice D (1500 mcg) is incorrect as it overestimates the conversion.