Metric Conversions for Nursing

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.

Correct Answer: A

Rationale: To convert liters to milliliters, you need to multiply by 1000 since 1 liter is equal to 1000 milliliters. Therefore, 0.5 liters x 1000 = 500 ml. Choice A (500 ml) is correct. Choices B, C, and D are incorrect because they do not accurately convert liters to milliliters.

Correct Answer: C

Rationale: To convert 5 kilometers to meters, you need to multiply by 1000 since 1 kilometer is equal to 1000 meters. Therefore, 5 kilometers x 1000 = 5000 meters. Choice C (5000 meters) is the correct answer. Choices A, B, and D are incorrect because they do not follow the correct conversion factor from kilometers to meters.

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: 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.