Metric Conversions for Nursing

Correct Answer: A

Rationale: To convert liters to milliliters, you multiply by 1000 since 1 liter is equal to 1000 milliliters. Therefore, 0.5 liters is equal to 0.5 x 1000 = 500 ml. Choice A (500 ml) is correct. Choices B, C, and D are incorrect because they do not follow the correct conversion factor of 1 liter to 1000 milliliters. B (50 ml), C (5 ml), and D (0.5 ml) are not the correct conversions for 0.5 liters.

Correct Answer: B

Rationale: The correct answer is B: 200 ml. To convert liters to milliliters, you need to multiply by 1000 since 1 liter equals 1000 milliliters. Therefore, 0.2 liters x 1000 = 200 ml. A) 20 ml is incorrect as it is the result of incorrectly converting 0.02 liters. C) 2 ml is incorrect as it is the result of incorrectly converting 0.002 liters. D) 2000 ml is incorrect as it is the result of incorrectly converting 2 liters.

Correct Answer: A

Rationale: To solve 0.5 x 200, we multiply 0.5 by 200, which equals 100. This is because when we multiply a decimal by a whole number, we move the decimal point to the right the same number of places as the total number of decimal places in the factors. In this case, 0.5 has one decimal place, and 200 is a whole number. Therefore, the correct answer is A: 100. Choice B: 50 is incorrect because it results from multiplying 0.5 by 100 instead of 200. Choice C: 150 is incorrect as it is the result of multiplying 0.5 by 300. Choice D: 200 is incorrect because it is one of the factors in the multiplication operation, not the result of the operation.

Correct Answer: C

Rationale: To convert kilograms to grams, you need to multiply by 1000 since there are 1000 grams in 1 kilogram. So, 1.25 kg x 1000 = 1250 grams, which is choice C. Choice A (12.5 grams) is incorrect as it is 10 times less than the correct answer. Choice B (125 grams) is incorrect as it is missing a zero. Choice D (1250 mg) is incorrect as it is in milligrams, not grams.

Correct Answer: A

Rationale: The correct answer is A: 100 g. To convert kilograms to grams, you need to multiply by 1000 since there are 1000 grams in a kilogram. Therefore, 0.1 kg x 1000 = 100 g. Choice B (10 g) is incorrect as it represents 0.01 kg. Choice C (1 g) is incorrect as it represents 0.001 kg. Choice D (0.1 g) is incorrect as it is the same value as the original measurement in kilograms.