What is 0.1 mg to mcg?

Correct Answer: A

Rationale: To convert milligrams to micrograms, you need to multiply by 1000. Therefore, 0.1 mg is equal to 100 mcg. This conversion is commonly used in medical calculations. Choice B (10 mcg) is incorrect because it would be the conversion from milligrams to micrograms if multiplied by 100, not 10. Choice C (1000 mcg) is incorrect as it would be the conversion from grams to micrograms if multiplied by 1000. Choice D (1 mcg) is incorrect as it represents the original unit without conversion.

Correct Answer: A

Rationale: To convert milligrams (mg) to micrograms (mcg), you need to multiply by 1000 since 1 mg is equal to 1000 mcg. Therefore, 0.3 mg x 1000 = 300 mcg. This conversion is crucial in healthcare to ensure accurate medication dosages. Choice B (30 mcg) is incorrect as it represents the conversion of 0.03 mg to mcg. Choice C (3000 mcg) is incorrect as it is the result of multiplying 0.3 mg by 10 instead of 1000. Choice D (3 mcg) is incorrect as it is the result of not multiplying by 1000 to convert milligrams to micrograms.

Correct Answer: A

Rationale: To convert grams to milligrams, you need to multiply by 1000 as there are 1000 milligrams in one gram. Therefore, 0.4 grams x 1000 = 400 mg. Choice A, 400 mg, is the correct answer. Choices B, C, and D are incorrect because they do not correctly apply the conversion factor of 1000 to convert grams to milligrams.

Correct Answer: A

Rationale: In this question, the correct answer is A) 500 milliliters. To understand this, we need to apply the concept of metric conversions. In the metric system, there are 1000 milliliters in 1 liter. So, to convert liters to milliliters, we need to multiply the given number of liters by 1000. Therefore, to convert 0.5 liters to milliliters, we multiply 0.5 by 1000 which equals 500 milliliters. This conversion is essential in various fields such as science, medicine, and everyday measurements. Now, let's analyze why the other options are incorrect: B) 50 milliliters - This is incorrect because it does not account for the correct conversion factor of 1000 milliliters in 1 liter. C) 5 milliliters - This option is incorrect as it only represents a fraction of the correct conversion. D) 0.5 milliliters - This is incorrect as it directly equates liters to milliliters without applying the correct conversion factor. Understanding metric conversions is crucial in fields where precise measurements are required. It is fundamental for students to grasp these conversions to ensure accuracy in calculations and to facilitate effective communication in various scientific and medical contexts.

Correct Answer: A

Rationale: To convert liters to milliliters, you multiply the number of liters by 1000. Therefore, 0.5 liters equals 500 milliliters. This conversion is standard in various fields, making choice A the correct answer. Choices B, C, and D are incorrect because they do not correctly convert liters to milliliters.