HESI A2 Math Practice Exam

Correct Answer: A

Rationale: To find the number of black marbles, we need to subtract the number of white marbles from the total. 34% of 6,657 is white marbles, which is approximately 2,261. So, the number of black marbles is 6,657 - 2,261 = 4,396. The closest option is A: 4,394, which is the correct answer. Choices B, C, and D are incorrect because they do not accurately represent the calculated number of black marbles.

Correct Answer: B

Rationale: To calculate the number of tablets needed, first, find the total Tylenol dosage needed for the child: 20 mg/kg * 12 kg = 240 mg. Then, divide the total dosage needed by the dosage per tablet: 240 mg / 80 mg = 3 tablets. Therefore, the correct answer is B (3 tablets). Choice A is incorrect because 1 tablet is not sufficient to meet the required dosage. Choices C and D are incorrect as they do not match the calculated amount needed based on the child's weight and the dosage per tablet.

Correct Answer: A

Rationale: To add 1.332 and 0.067, start from the rightmost digit and move left. Add 2 + 7 (9), then 3 + 6 (9), and 1 + 0 (1). The sum is 1.399, making choice A the correct answer. Choices B, C, and D are incorrect as they do not match the correct sum obtained through the addition process.

Correct Answer: B

Rationale: The correct answer is B: $19.60. To calculate profit, we subtract the distribution cost from the total revenue. If the distribution cost is $10, and profit is the remainder, then profit = total revenue - distribution cost. Let's denote total revenue as TR. Therefore, profit = TR - $10. Since the distribution cost is $10, the profit will be TR - $10. To find TR, we add the distribution cost to the profit: TR = profit + $10. If we substitute $10 for the distribution cost and $19.60 for profit, we get TR = $19.60 + $10 = $29.60. This means that the correct answer for the profit will be $19.60. Summary: A: $10.40 - Incorrect. This choice is lower than the distribution cost, so it cannot be the profit. C: $14.90 - Incorrect. This choice is also lower than the distribution cost, ruling

Correct Answer: A

Rationale: To convert 0.007 kilograms to grams, you should multiply by 1000 since there are 1000 grams in a kilogram. So, 0.007 kg * 1000 = 7 grams (Option A). Option B is incorrect as it incorrectly multiplies by 10 instead of 1000. Option C and D mistakenly move the decimal point to the wrong place.