Nursing Metric Conversions

Correct Answer: B

Rationale: To convert 35.4 centimeters to kilometers, we need to divide by 100, as there are 100 centimeters in a meter and 1000 meters in a kilometer. Therefore, 35.4 cm ÷ 100 = 0.354 meters. To convert meters to kilometers, we divide by 1000, so 0.354 m ÷ 1000 = 0.000354 km, which is choice B. Choices A, C, and D are incorrect as they do not follow the correct conversion factor.

Correct Answer: A

Rationale: The correct formula to convert Celsius to Fahrenheit is A: (C * 9/5) + 32. To convert Celsius to Fahrenheit, you first multiply the Celsius temperature by 9/5 to get the equivalent in Fahrenheit scale, then add 32 to adjust for the offset between the two scales. This formula correctly accounts for both the scaling factor and the offset. Choices B, C, and D have incorrect scaling factors or offsets, leading to inaccurate conversions. B uses the incorrect scaling factor, C and D incorrectly subtract 32 instead of adding it.

Correct Answer: B

Rationale: To convert grams to milligrams, you need to multiply by 1,000 since there are 1,000 milligrams in 1 gram. So, 2 grams x 1,000 = 2,000 mg. Therefore, the correct answer is B. A: 200 mg - This is incorrect as it doesn't account for the conversion factor from grams to milligrams. C: 20 mg - This is incorrect as it is 100 times less than the correct conversion. D: 20,000 mg - This is incorrect as it is 10 times greater than the correct conversion.

Correct Answer: A

Rationale: The correct answer is A: meter. In the metric system, 'm' stands for meter, which is the base unit of length. Mole (B) is a unit of amount of substance, milli (C) represents a prefix meaning one-thousandth, and micro (D) represents a prefix meaning one-millionth. Therefore, A is the correct choice as it directly corresponds to the unit of length in the metric system.

Correct Answer: C

Rationale: To convert from quarts to ounces, you need to know that 1 quart is equal to 32 ounces. Therefore, 2 quarts would be 2 * 32 = 64 ounces. The correct answer is C (16 ounces) because it is the only option that correctly states the conversion from quarts to ounces. Option A (8 ounces) is incorrect as it is half of the correct answer. Option B (32 ounces) is incorrect as it represents the amount in 1 quart, not 2 quarts. Option D (64 ounces) is incorrect as it corresponds to the total number of ounces in 2 quarts, not the conversion from quarts to ounces.