HESI A2 Math Practice Test 2023

Correct Answer: B

Rationale: To find the sum of 1/3, 1/4, and 1/6, we need to first find a common denominator, which is 12 in this case. Then, we convert each fraction to have the same denominator: 1/3 = 4/12, 1/4 = 3/12, and 1/6 = 2/12. Adding these fractions gives us 4/12 + 3/12 + 2/12 = 9/12, which simplifies to 3/4 or 0.75. Therefore, the correct answer is B: 1/2. Explanation for other choices: A: 5/12 - Incorrect. This sum is not equal to the sum of 1/3, 1/4, and 1/6. C: 1/3 - Incorrect. This is the value of just one of the given fractions, not the sum of all three

Correct Answer: B

Rationale: To determine the number of nurses needed for 40 patients: 1. Calculate the nurse-to-patient ratio: 5 nurses for 20 patients = 1 nurse for 4 patients. 2. Divide 40 patients by the ratio (40 patients ÷ 4 patients/nurse) = 10 nurses. Therefore, 10 nurses are needed for 40 patients. Choice B (8) is incorrect as it does not align with the calculated ratio. Choices A (7) and C (9) are also incorrect as they do not account for the correct calculation based on the given ratio.

Correct Answer: C

Rationale: To find the total number of pages in the book, we multiply the number of chapters by the number of pages per chapter: 2 chapters/day * 6 pages/chapter = 12 pages/day. To finish 798 pages, we divide 798 pages by 12 pages/day, giving 66.5 days. Therefore, the correct answer is C: 66.5 days. Choice A (133 days) is incorrect because it assumes the man reads 1 chapter per day instead of 2. Choice B (399 days) is incorrect as it overestimates the number of days needed by assuming the man reads only 1 page per day. Choice D (75 days) is incorrect because it underestimates the time needed by assuming the man reads 3 chapters per day instead of 2.

Correct Answer: B

Rationale: To convert milliliters to liters, you divide by 1000 since 1 liter is equal to 1000 milliliters. So, 8000 milliliters divided by 1000 equals 8 liters. Therefore, the correct answer is B: 8 liters. Explanation for incorrect choices: A: 0.8 liters - Incorrect because the conversion is 8000 milliliters divided by 1000 equals 8 liters, not 0.8 liters. C: 0.8 liters - Same as choice A, incorrect conversion. D: 0.08 liters - Incorrect because the conversion is 8000 milliliters divided by 1000 equals 8 liters, not 0.08 liters.

Correct Answer: B

Rationale: To convert grams to milligrams, you multiply by 1000 since there are 1000 milligrams in 1 gram. Therefore, 7 grams x 1000 = 7000 milligrams, which corresponds to choice B. Choice A is incorrect as it represents 700 mg (not 7000 mg). Choice C is incorrect as it represents 70 mg (not 7000 mg). Choice D is incorrect as it represents 0.007 mg (not 7000 mg).