ATI TEAS 7
Nursing Metric Conversions
1. How many centimeters are in 0.25 meters?
- A. 2.5 cm
- B. 25 cm
- C. 250 cm
- D. 0.25 cm
Correct answer: B
Rationale: To convert meters to centimeters, you need to multiply by 100 since there are 100 centimeters in a meter. Therefore, 0.25 meters x 100 = 25 centimeters. Choice A, '2.5 cm,' is incorrect as it is the result of multiplying by 10 instead of 100. Choice C, '250 cm,' is incorrect as it is the result of multiplying by 1000. Choice D, '0.25 cm,' is incorrect as it suggests the conversion is in the opposite direction, from centimeters to meters.
2. Convert 345 centimeters to kilometers (km).
- A. 0.00345 km
- B. 0.0345 km
- C. 0.345 km
- D. 34.5 km
Correct answer: B
Rationale: To convert centimeters to kilometers, you need to divide by 100,000 since there are 100,000 centimeters in a kilometer. Therefore, 345 cm ÷ 100,000 = 0.00345 km. The correct answer is 0.0345 km, which is obtained by accurately dividing 345 by 100,000. Choices A, C, and D are incorrect because they do not correctly apply the conversion factor and result in inaccurate values for kilometers.
3. What is 0.16 as a fraction?
- A. 16\100
- B. 16\1000
- C. 4\25
- D. 4\50
Correct answer: C
Rationale: To convert 0.16 into a fraction, you write it as 16\100, which simplifies to 4\25. This fraction is in its simplest form and accurately represents the original decimal value without further reduction. Choice A (16\1000) is incorrect because the fraction is not simplified, and Choice D (4\50) is incorrect as it simplifies to 2\25, not representing the original decimal value. Therefore, Choice C is the correct answer.
4. How many ounces are in one gallon?
- A. 64 ounces
- B. 128 ounces
- C. 100 ounces
- D. 150 ounces
Correct answer: B
Rationale: The correct answer is B: 128 ounces. One gallon is equivalent to 128 ounces. This conversion relationship is commonly used in cooking, baking, and various liquid measurements. Choice A (64 ounces) is incorrect as it represents half the amount of a gallon. Choice C (100 ounces) and Choice D (150 ounces) are also incorrect, as they do not accurately reflect the conversion of a gallon to ounces.
5. What is the equivalent of 0.3 milliliters?
- A. 0.03 ml
- B. 0.3 ml
- C. 3 ml
- D. 30 ml
Correct answer: B
Rationale: 0.3 milliliters is equivalent to 0.3 ml. This is a precise measurement commonly used in medical settings for administering small doses of liquid medication. It is important to understand and recognize the decimal point placement when converting between milliliters and other volume units. Choice A (0.03 ml) is incorrect as it represents a smaller amount than 0.3 ml. Choice C (3 ml) and Choice D (30 ml) are also incorrect as they are larger measurements and do not match the given amount of 0.3 ml.
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