Math HESI A2 Practice Test

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 find the time to wash 100 cars, we can set up a proportion: 30 cars / 15 minutes = 100 cars / x minutes. Cross multiply to get 30x = 1500, then divide by 30 to find x = 50 minutes. Therefore, the correct answer is A. Choice B, 55 minutes, is incorrect as it does not align with the calculation. Choice C, 30 minutes, is incorrect as it is the time to wash 60 cars, not 100. Choice D, 45 minutes, is incorrect as it does not match the calculated time of 50 minutes for washing 100 cars.

Correct Answer: A

Rationale: To subtract 9.99 from 12.02, we need to align the decimal points. 12.02 minus 9.99 equals 2.03. So, the correct answer is A. Choice B, 2.21, is the result of adding the numbers. Choice C, 3.17, is the result of adding 9.99 and 2.03. Choice D, 7.97, is the result of subtracting 12.02 from 9.99.

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: C

Rationale: To convert quarts to ounces, you need to know that 1 quart equals 32 ounces. Therefore, 1.5 quarts would be 1.5 x 32 = 48 ounces. So, the correct answer is C (48 ounces). Choice A is incorrect as it incorrectly converts quarts to ounces. Choice B is half of the correct conversion. Choice D is double the correct conversion.