Math HESI A2 Practice Test

Correct Answer: B

Rationale: To measure 15ml of liquid using a syringe that holds 3ml, you would need to divide 15ml by 3ml to determine the number of syringes needed. 15ml ÷ 3ml = 5 syringes. Therefore, the correct answer is B: 5 syringes. Choice A (3 syringes) is too few, choice C (7 syringes) and choice D (9 syringes) are too many based on the calculation.

Correct Answer: A

Rationale: To divide 5 3/4 by 1/2, we convert 5 3/4 to an improper fraction as 23/4. Then, we divide 23/4 by 1/2, which is equivalent to multiplying by the reciprocal of 1/2, which is 2. Therefore, 23/4 * 2 = 46/4 = 11 1/2. The correct answer is A. Other choices are incorrect as they do not result from the correct calculation process.

Correct Answer: B

Rationale: To convert pints to ounces, we know that 1 pint is equal to 16 ounces. Therefore, 8 1/4 pints can be calculated as 8 x 16 + 4 = 132 ounces. This is why choice B (132 oz) is correct. Choices A, C, and D are incorrect because they do not accurately represent the conversion of pints to ounces in this scenario.

Correct Answer: A

Rationale: The correct answer is A: 1/6. There is only one outcome of rolling a 2 on a six-sided die, and there are a total of six possible outcomes (1, 2, 3, 4, 5, 6). Therefore, the probability of rolling a 2 is 1 out of 6, which simplifies to 1/6. Explanation for why other choices are incorrect: B: 1/4 - This is incorrect because there is only one outcome of rolling a 2, not 2 outcomes out of 6. C: 1/3 - This is incorrect because the probability of rolling a 2 is not 1 out of 3, but 1 out of 6. D: 1/2 - This is incorrect because the probability of rolling a 2 is not 1 out of 2, but 1 out of 6.

Correct Answer: A

Rationale: To subtract 12 - 7 4\5, you first convert 12 to an improper fraction: 12 = 60\5. Then, subtract 60\5 - 7 4\5 = 60\5 - 39\5 = 21\5. Finally, convert 21\5 back to a mixed number, which is 4 1\5 or 5 1\5. Therefore, the correct answer is A. Choices B, C, and D are incorrect as they do not result from the correct subtraction process.