Math HESI A2 Practice Test

Correct Answer: A

Rationale: To convert milliliters to liters, we divide by 1000 since 1 liter = 1000 milliliters. So, 2500 milliliters ÷ 1000 = 2.5 liters. Therefore, the correct answer is A: 2.5 liters. Explanation for other choices: B: 1.5 liters - Incorrect, obtained by incorrect division. C: 3.5 liters - Incorrect, obtained by adding instead of dividing. D: 0.25 liters - Incorrect, obtained by misplaced decimal point.

Correct Answer: A

Rationale: To calculate average speed, divide total distance by total time. In this case, 5 miles in 45 minutes equals 5/0.75 = 6.67 mph. Choice A is correct because it correctly calculates the average speed based on the given information. Choices B, C, and D are incorrect as they do not accurately calculate the average speed.

Correct Answer: B

Rationale: To convert liters to milliliters, you need to multiply by 1000. Therefore, to find how many milliliters are in 6 liters, you would multiply 6 by 1000, which equals 6000 milliliters. Choice A (60 milliliters) is incorrect as it is 100 times less than the correct answer. Choice C (600 milliliters) is incorrect as it is 10 times less than the correct answer. Choice D (0.6 milliliters) is incorrect as it is a decimal and represents a fraction of the milliliters in 6 liters.

Correct Answer: D

Rationale: To find 50% of 120, you multiply 120 by 0.50 (which represents 50%). So, 120 x 0.50 = 60. Therefore, the correct answer is D. Choice A (50) is incorrect because it represents the percentage value, not the result of the calculation. Choice B (50) is a duplicate of Choice A. Choice C (70) is incorrect as it is not the result of finding 50% of 120.

Correct Answer: A

Rationale: To add 1/4 and 3/8, we need a common denominator, which is 8. So, 1/4 becomes 2/8. Adding 2/8 + 3/8 gives us 5/8. Therefore, the correct answer is A: 5/8. Choice B, 7/12, is incorrect as it is the result of adding 1/4 and 1/3. Choice C, 2/3, is incorrect as it is the result of adding 1/4 and 1/2. Choice D, 1/2, is incorrect as it is the result of adding 1/4 and 1/4.