ATI TEAS 7
Nursing Metric Conversion
1. Convert 25 millimeters to centimeters.
- A. 250 cm
- B. 25 cm
- C. 2.5 mm
- D. 25 mm
Correct answer: D
Rationale: To convert millimeters to centimeters, you need to divide by 10 because there are 10 millimeters in one centimeter. Therefore, 25 millimeters is equal to 25/10 = 2.5 centimeters, making choice D the correct answer. Choice A (250 cm) is incorrect as it incorrectly multiplies instead of dividing by 10. Choice B (25 cm) is also incorrect as it doesn't convert millimeters to centimeters. Choice C (2.5 mm) is incorrect as it provides the measurement in millimeters rather than centimeters.
2. How many millimeters are in 0.75 centimeters?
- A. 7.5 mm
- B. 0.75 mm
- C. 75 mm
- D. 75 cm
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.
3. What is the equivalent of 255.0 pounds in kilograms (1 kg = 2.205 lbs)?
- A. 115.7 kg
- B. 126.0 kg
- C. 115.8 kg
- D. 115.6 kg
Correct answer: D
Rationale: To convert pounds to kilograms, you need to divide the weight in pounds by 2.205 (1 kg = 2.205 lbs). Therefore, 255.0 pounds divided by 2.205 equals 115.6 kilograms. This results in choice D being the correct answer. Choices A, B, and C are incorrect as they do not reflect the accurate conversion calculation from pounds to kilograms.
4. What is 0.07 as a simplified fraction?
- A. 7/100
- B. 7/50
- C. 7/25
- D. 7/10
Correct answer: A
Rationale: The decimal 0.07 can be expressed as the fraction 7/100, where 7 is the numerator and 100 is the denominator. To simplify the fraction, you divide both the numerator and denominator by their greatest common divisor, which in this case is 1. Therefore, 7/100 is already in its simplest form and cannot be further simplified. Choices B, C, and D are incorrect fractions as they do not represent the decimal 0.07.
5. What does the prefix 'centi' mean?
- A. 0.1
- B. 0.01
- C. 0.001
- D. 1
Correct answer: B
Rationale: The prefix 'centi' means 0.01, which is one-hundredth of the base unit. For example, 1 centimeter is equal to 0.01 meters. Choice A (0.1) is incorrect as it represents 'deci,' which means one-tenth. Choice C (0.001) is incorrect as it represents 'milli,' which means one-thousandth. Choice D (1) is incorrect as it is not a valid interpretation of the prefix 'centi.' Therefore, the correct answer is B.
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