ATI TEAS 7
Nursing Metric Conversion
1. Convert 5 kilograms to grams.
- A. 50 grams
- B. 500 grams
- C. 5,000 grams
- D. 50,000 grams
Correct answer: C
Rationale: To convert kilograms to grams, you need to multiply by 1000 since there are 1000 grams in a kilogram. Therefore, 5 kilograms is equal to 5,000 grams. Choices A, B, and D are incorrect because they do not correctly convert the given amount of kilograms to grams.
2. How many milligrams are in 1 gram?
- A. 1 mg
- B. 10 mg
- C. 100 mg
- D. 1,000 mg
Correct answer: D
Rationale: The correct answer is D: 1,000 mg. This is because 1 gram is equivalent to 1,000 milligrams. To convert grams to milligrams, you multiply by 1,000. Choices A, B, and C are incorrect. Choice A (1 mg) is the smallest unit, and it would take 1,000 of these to make 1 gram. Choice B (10 mg) is also too small, as it would require 100 of these to equal 1 gram. Choice C (100 mg) is closer, but it still falls short of the correct conversion, which is 1,000 mg in 1 gram.
3. What is 0.2 liters when converted to milliliters?
- A. 20 ml
- B. 200 ml
- C. 2 ml
- D. 2000 ml
Correct answer: B
Rationale: To convert liters to milliliters, you need to multiply by 1000, not 10000. Therefore, 0.2 liters equals 200 ml (0.2 x 1000 = 200 ml). Choice A, 20 ml, is incorrect because it's the result of multiplying by 10 instead of 1000. Choice C, 2 ml, is incorrect as it's the result of ignoring the decimal point. Choice D, 2000 ml, is incorrect because it's the result of multiplying by 10000.
4. Convert 345,000 millimeters to centimeters (cm).
- A. 34,500 cm
- B. 3,450 cm
- C. 345,000 cm
- D. 345,000,000 cm
Correct answer: B
Rationale: To convert millimeters to centimeters, you need to divide by 10 since there are 10 millimeters in 1 centimeter. Therefore, 345,000 mm รท 10 = 34,500 cm. Choice A is incorrect because it is a factor of 10 higher than the correct answer. Choice C is incorrect because it represents the original quantity in centimeters, not the converted value. Choice D is incorrect as it erroneously multiplies the millimeters by 1,000 instead of dividing by 10 to convert to centimeters.
5. Convert 0.004 to a ratio.
- A. 1:250
- B. 4:200
- C. 2:400
- D. 9:200
Correct answer: A
Rationale: To convert 0.004 to a ratio, we can express it as 4/1000, which simplifies to 1/250. Therefore, the correct ratio is 1:250. Choice B (4:200) is incorrect as it simplifies to 1:50, not 1:250. Choice C (2:400) simplifies to 1:200, which is also incorrect. Choice D (9:200) simplifies to a ratio greater than 1:1, which is not equivalent to 1:250.
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