Metric Conversions for TEAS 7

Correct Answer: B

Rationale: To convert liters to milliliters, you need to know that 1 liter is equal to 1000 milliliters. So, to find how many milliliters are in 0.5 liters, you multiply 0.5 by 1000, which equals 500 milliliters. Therefore, the correct answer is B: 500 mL. Choice A (50 mL) is incorrect because it is 10 times less than the correct answer. Choice C (5,000 mL) is incorrect because it is 10 times more than the correct answer. Choice D (5 mL) is incorrect because it is 100 times less than the correct answer.

Correct Answer: A

Rationale: To convert 0.875 to a fraction, we can write it as 875/1000 and simplify it to 7/8 by dividing both the numerator and denominator by 125. The correct answer is A (7/8). Choice B (9/10) is incorrect as it does not represent 0.875. Choices C (5/6) and D (3/4) are also incorrect fractions as they do not equal 0.875 when converted.

Correct Answer: B

Rationale: To convert yards to feet, we use the fact that 1 yard is equal to 3 feet. This is because 1 yard is defined as 3 feet. Therefore, the correct answer is B: 3 feet. Explanation for other choices: A: 4 feet - Incorrect because 1 yard is equal to 3 feet, not 4 feet. C: 2 feet - Incorrect because 1 yard is equal to 3 feet, not 2 feet. D: 5 feet - Incorrect because 1 yard is equal to 3 feet, not 5 feet.

Correct Answer: A

Rationale: To convert milligrams (mg) to micrograms (mcg), you need to multiply by 1000 since 1 mg = 1000 mcg. Therefore, 0.3 mg would be equal to 0.3 * 1000 = 300 mcg. This makes choice A (300 mcg) the correct answer. Choices B, C, and D are incorrect because they do not apply the correct conversion factor of 1000 to convert from mg to mcg, leading to incorrect values.

Correct Answer: A

Rationale: The correct answer is A: 500 ml. To convert liters to milliliters, you multiply by 1000 because there are 1000 milliliters in 1 liter. So, 0.5 liter x 1000 = 500 ml. Choice B, 50 ml, is 10 times less than the correct answer. Choice C, 5 ml, is 100 times less than the correct answer. Choice D, 0.5 ml, is 1000 times less than the correct answer.