ATI TEAS 7
Metric Conversions for TEAS 7
1. How many kilometers (km) is equivalent to 1,000 meters?
- A. 0.1 km
- B. 1 km
- C. 10 km
- D. 0.01 km
Correct answer: B
Rationale: To convert meters to kilometers, the conversion factor is 1 kilometer = 1,000 meters. Therefore, to find how many kilometers are in 1,000 meters, you divide 1,000 by 1,000, which equals 1 kilometer. Choice A (0.1 km), Choice C (10 km), and Choice D (0.01 km) are incorrect because they do not correctly represent the conversion of 1,000 meters to kilometers.
2. Convert 5 kilometers to meters.
- A. 50 meters
- B. 500 meters
- C. 5000 meters
- D. 0.5 meters
Correct answer: C
Rationale: To convert kilometers to meters, you need to multiply by 1000 because there are 1000 meters in 1 kilometer. Therefore, 5 kilometers x 1000 = 5000 meters. Choice A (50 meters) is incorrect because it underestimates the conversion. Choice B (500 meters) is incorrect as it also underestimates the conversion. Choice D (0.5 meters) is incorrect as it incorrectly represents the conversion as less than a kilometer.
3. What is the expression 1 in. = 2.54 cm properly called?
- A. Law of Conservation of Units
- B. International Yard
- C. Standard Conversion Factor
- D. Exact Equivalent
Correct answer: D
Rationale: The correct answer is D: Exact Equivalent. The expression 1 inch = 2.54 cm is a direct and precise conversion between inches and centimeters, making it an exact equivalent. It is not related to the Law of Conservation of Units (A) as this principle pertains to the conservation of physical quantities in a system. The International Yard (B) is a unit of measurement, but it is not the term for the given expression. Similarly, while the conversion factor in the expression is standard, it is specifically an exact equivalent and not just a general standard conversion factor (C). Therefore, D is the most appropriate term to describe this specific conversion relationship.
4. Convert 0.875 to a fraction,
- A. 7\8
- B. 8\7
- C. 3\4
- D. 9\10
Correct answer: A
Rationale: To convert 0.875 to a fraction, express it as 875\10000. Simplifying this fraction by dividing both the numerator and denominator by 125 results in 7\80.
5. What is 0.1 mg to mcg?
- A. 100 mcg
- B. 10 mcg
- C. 1000 mcg
- D. 1 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.
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