HESI A2 Practice Test Math

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: A

Rationale: To find the number of candies each camper will receive, divide the total number of candies (225) by the number of campers (25). 225 ÷ 25 = 9. Therefore, each camper will receive 9 pieces of candy. Choice A is correct because it correctly calculates the equal distribution. Choices B, C, and D are incorrect as they do not divide the total number of candies by the number of campers to determine the equal distribution.

Correct Answer: B

Rationale: To find the equivalent dosage in milligrams, multiply the fraction of a tablet (3/4) by the total dosage in a full tablet (500mg). Calculation: (3/4) * 500 = 375mg Therefore, the correct answer is B (425mg). Other choices are incorrect because: A: 375mg - This is the incorrect calculation of the dosage equivalent. C: 450mg - This is not the correct result of the calculation. D: 475mg - This is also an incorrect calculation based on the given information.

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: A

Rationale: The correct answer is A: 55 mg/dL. To convert from mmol/L to mg/dL for glucose, you multiply by 18. Therefore, 5.5 mmol/L x 18 = 99 mg/dL. However, blood glucose levels are commonly approximated by dividing by 2, so 99 mg/dL ≈ 50 mg/dL. Therefore, the closest option is A: 55 mg/dL. Option B (5.5 mg/dL) is incorrect as it does not account for the conversion factor of 18. Option C (0.55 mg/dL) is incorrect as it is a decimal point off from the correct answer. Option D (550 mg/dL) is incorrect as it is a factor of 10 too high.