HESI A2 Practice Test Math

Correct Answer: A

Rationale: To change a percentage to a decimal, you divide by 100. For 58%, you divide 58 by 100, which equals 0.58. Choice A (0.58) is correct because it represents 58% as a decimal. Choices B, C, and D are incorrect because B (5) is the whole number equivalent of 58%, C (0) is incorrect as it represents 0%, and D (0) is incorrect as it doesn't convert the percentage to a decimal.

Correct Answer: B

Rationale: To find the result of dividing 40.3 by 4.8, you divide 40.3 by 4.8 which equals approximately 8.4. The correct answer is B. To see why the other choices are incorrect: A: 7.5 - Incorrect, as it is not the result of 40.3 divided by 4.8. C: 6.2 - Incorrect, as it is not the result of 40.3 divided by 4.8. D: 9.1 - Incorrect, as it is not the result of 40.3 divided by 4.8.

Correct Answer: B

Rationale: To determine the sign of the product when multiplying positive and negative integers, we follow the rule: Positive * Negative = Negative. This is because when we multiply a positive number by a negative number, the result will always be negative. Hence, choice B is correct. Choice A is incorrect because the product is not always positive. Choice C is incorrect as the sign of the product is consistent regardless of specific numbers used. Choice D is incorrect as positive and negative integers can indeed be multiplied.

Correct Answer: C

Rationale: To calculate the number of mils in 1.5 grams, we first convert 1.5 grams to milligrams: 1.5g * 1000mg/g = 1500mg. Then, we divide 1500mg by the amount in 1 mil (500mg/mil) to get 3 mils. Choice C is correct. Choices A, B, and D are incorrect because they do not follow the correct conversion process. Choice A (9 mils) results from dividing 1500mg by 500mg, which is incorrect. Choice B (2 mils) and Choice D (5 mils) also do not yield the correct answer when dividing 1500mg by 500mg.

Correct Answer: A

Rationale: To find the number of floors, divide the total height of the building (150 feet) by the height of each floor (12 feet). 150 ÷ 12 = 12.5. Since we cannot have a fraction of a floor, we must round down to the nearest whole number, which is 13. Therefore, the correct answer is A: 13 floors. The other choices are incorrect because they do not accurately represent the result of dividing the total height by the height of each floor.