How many centimeters are in one millimeter?

Correct Answer: B

Rationale: The correct answer is B: 0.1 cm. One millimeter is equal to 0.1 centimeters, not 1/100th cm as mentioned in choice A. Choice C, 1 cm, is incorrect as a millimeter is smaller than a centimeter. Choice D, 10 cm, is incorrect as it incorrectly magnifies the conversion, making a millimeter larger than a centimeter. Therefore, the accurate conversion is that one millimeter equals 0.1 centimeters.

Correct Answer: B

Rationale: The correct answer is B: 100 cm. 1 meter is equivalent to 100 centimeters. Choice A (10 cm) is incorrect as it represents the conversion of decimeters to centimeters. Choice C (1,000 cm) is incorrect as it represents the conversion of meters to millimeters. Choice D (10,000 cm) is incorrect as it represents the conversion of meters to centimeters with an extra zero.

Correct Answer: D

Rationale: The correct answer is D: 1,000 µg. To convert milligrams to micrograms, you need to multiply by 1,000 because there are 1,000 micrograms in 1 milligram. Choices A, B, and C are incorrect because they do not correctly convert milligrams to micrograms. 1 milligram is equal to 1,000 micrograms, making choice D the right answer.

Correct Answer: B

Rationale: In this question, the correct answer is B) 500 mL. To understand why this is the correct choice, we need to consider the relationship between liters and milliliters in the metric system. 1 liter is equal to 1000 milliliters. Therefore, to convert from liters to milliliters, we multiply the number of liters by 1000. In this case, we are given 0.5 liters, so to find how many milliliters are in 0.5 liters, we multiply 0.5 by 1000, which gives us 500 milliliters. Now, let's analyze why the other options are incorrect: - A) 50 mL: This is incorrect because it represents the conversion of 0.05 liters to milliliters, not 0.5 liters. - C) 5,000 mL: This option incorrectly multiplies 0.5 liters by 10,000 instead of 1000 to convert to milliliters. - D) 5 mL: This option is incorrect as it represents the conversion of 0.005 liters to milliliters, not 0.5 liters. Educationally, understanding metric conversions is crucial in various fields like science, healthcare, and engineering. It is important for students to grasp the relationship between different units within the metric system to perform accurate conversions and calculations. Practice with such questions helps reinforce this fundamental skill.

Correct Answer: C

Rationale: To convert centimeters to millimeters, you need to multiply by 10 since there are 10 millimeters in a centimeter. Therefore, 0.75 centimeters equals 0.75 x 10 = 7.5 millimeters, not 75 millimeters (Choice C). Choice A (7.5 mm) is the correct conversion, while Choice B (0.75 mm) and Choice D (75 cm) are incorrect conversions.