ATI TEAS 7
Nursing Metric Conversion
1. How many liters are in 750 milliliters?
- A. 7.5 liters
- B. 0.75 liters
- C. 0.0075 liters
- D. 0.075 liters
Correct answer: B
Rationale: To convert milliliters to liters, you need to divide by 1000 since there are 1000 milliliters in a liter. Therefore, 750 milliliters divided by 1000 equals 0.75 liters. Choice A (7.5 liters) is incorrect as it is off by a factor of 10. Choice C (0.0075 liters) is incorrect as it is off by a factor of 100. Choice D (0.075 liters) is incorrect as it is off by a factor of 10.
2. How many milliliters are there in 0.5 liters?
- A. 500 milliliters
- B. 50 milliliters
- C. 5 milliliters
- D. 0.5 milliliters
Correct answer: A
Rationale: To convert liters to milliliters, you need to multiply by 1000 since there are 1000 milliliters in a liter. Therefore, 0.5 liters is equal to 500 milliliters. Choices B, C, and D are incorrect because they do not reflect the correct conversion from liters to milliliters.
3. How many milliliters are in a tablespoon?
- A. 10 ml
- B. 15 ml
- C. 5 ml
- D. 20 ml
Correct answer: B
Rationale: The correct answer is B: 15 ml. One tablespoon is equivalent to 15 milliliters. The conversion factor for tablespoons to milliliters is 1 tablespoon = 15 milliliters. Choice A (10 ml) is incorrect because it is not the standard conversion for a tablespoon. Choice C (5 ml) is incorrect as it is too low for a tablespoon. Choice D (20 ml) is incorrect as it is too high for a tablespoon. Therefore, the correct conversion is 15 milliliters for one tablespoon.
4. What is 0.1 kg in grams?
- A. 100 g
- B. 10 g
- C. 1 g
- D. 0.1 g
Correct answer: A
Rationale: To convert kilograms to grams, you need to multiply by 1,000 since there are 1,000 grams in a kilogram. Therefore, 0.1 kg equals 100 grams. Choice B (10 g) is incorrect because it represents converting 0.01 kg to grams. Choice C (1 g) is incorrect as it reflects the conversion of 0.001 kg to grams. Choice D (0.1 g) is the value in grams equivalent to 0.01 kg, not 0.1 kg.
5. 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.
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