Nursing Metric Conversions

Correct Answer: D

Rationale: The correct answer is D: Exact Equivalent. This term refers to a precise conversion between two different units of measurement without any approximation. In this case, 1 inch is exactly equal to 2.54 centimeters, making it an exact equivalent. A: Law of Conservation of Units - This choice is incorrect because it does not refer to the specific term used for the conversion between inches and centimeters. B: International Yard - This choice is incorrect as it does not accurately describe the relationship between inches and centimeters. C: Standard Conversion Factor - This choice is incorrect because it is a general term and does not specifically address the exact relationship between inches and centimeters.

Correct Answer: A

Rationale: To simplify the ratio 0.004, we need to express it in the form of a ratio of integers. First, multiply by 1000 to get 4. So, the ratio becomes 4:1000. Further simplifying by dividing both terms by 4 gives us 1:250, which is the correct answer (A). Choices B, C, and D are incorrect because they do not represent the simplified ratio of 0.004. B, C, and D do not result from the correct calculation process and do not simplify to the equivalent ratio of 1:250.

Correct Answer: B

Rationale: To convert grams to milligrams, you need to multiply by 1,000 since 1 gram is equal to 1,000 milligrams. Therefore, to convert 3,450 grams to milligrams, you multiply 3,450 by 1,000, which equals 3,450,000 mg. The correct answer is B. Explanation for other choices: A: 34,500 mg - This is incorrect as it only multiplies by 10 (not 1,000). C: 3,450 mg - This is incorrect as it does not convert grams to milligrams. D: 3,450,000 mg - This is incorrect as it repeats the original value in milligrams.

Correct Answer: B

Rationale: The correct answer is B: 2000 pounds. There are 2000 pounds in 1 ton because a ton is equal to 2000 pounds. This conversion is based on the fact that 1 ton is equivalent to 2000 pounds in the imperial system of measurement. Therefore, to convert tons to pounds, you simply multiply the number of tons by 2000. Choice A (1000 pounds) is incorrect because it represents half a ton, not a full ton. Choice C (1500 pounds) and Choice D (2500 pounds) are also incorrect as they do not match the actual conversion factor of 2000 pounds in 1 ton.

Correct Answer: B

Rationale: To convert liters to milliliters, you need to multiply by 1000 since 1 liter equals 1000 milliliters. So, 0.2 liters x 1000 = 200 milliliters, making choice B the correct answer. Choice A is incorrect as it represents 0.02 liters. Choice C is incorrect as it represents 0.002 liters. Choice D is incorrect as it represents 2 liters, not 0.2 liters.