Metric Conversions for Nursing

Correct Answer: B

Rationale: To convert meters to centimeters, you multiply by 100 (1 meter = 100 cm). So, 4 meters x 100 cm/meter = 400 cm (Choice B). Choice A (40 cm) is incorrect as it represents 0.4 meters. Choice C (4 cm) is incorrect as it corresponds to 0.04 meters. Choice D (0.4 cm) is incorrect as it is 0.004 meters. Therefore, the correct answer is B (400 cm) as it accurately represents 4 meters in centimeters.

Correct Answer: B

Rationale: The correct answer is B: 1,000 mg. There are 1,000 milligrams in 1 gram. This is because the prefix "milli-" represents one thousandth, so 1 gram is equal to 1,000 milligrams. Choice A (100 mg) is incorrect because it represents only a hundredth of a gram. Choice C (1 mg) is incorrect as it is only one thousandth of a gram. Choice D (10,000 mg) is incorrect as it is actually 10 grams, not 1 gram.

Correct Answer: B

Rationale: To convert 0.1 liter to milliliters, you need to know that 1 liter is equal to 1000 milliliters. So, to convert 0.1 liter, you multiply 0.1 by 1000, which equals 100 milliliters. Therefore, the correct answer is B: 100 ml. Choice A (10 ml) is incorrect because it doesn't consider the conversion factor between liters and milliliters. Choice C (1000 ml) is incorrect as it represents 1 liter, not 0.1 liter. Choice D (1 ml) is incorrect as it is too small of a value for 0.1 liter.

Correct Answer: A

Rationale: To convert milliliters to liters, you need to divide by 1000 since there are 1000 milliliters in 1 liter. So, 2500 milliliters ÷ 1000 = 2.5 liters (Option A). Option B (25 liters) is 10 times the correct answer. Option C (0.25 liters) is dividing by 10 instead of 1000. Option D (250 liters) is multiplying by 100 instead of dividing by 1000.

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.