HESI A2 Math Practice Exam

Correct Answer: C

Rationale: To convert 2 teaspoons to milliliters, we need to know that 1 teaspoon is approximately 4.93 milliliters. Therefore, 2 teaspoons would be 2 * 4.93 = 9.86 milliliters. The correct answer is C (9.86 milliliters). Choice A (4.3 milliliters) is incorrect because it is too low based on the conversion factor. Choice B (9 milliliters) is close but not accurate, as the exact conversion gives 9.86 milliliters. Choice D (4 milliliters) is also incorrect as it is lower than the actual conversion.

Correct Answer: B

Rationale: To calculate the percentage Jill saved, we divide the amount saved ($140) by her total earnings ($400) and multiply by 100. So, (140/400) * 100 = 35%. Choice B is correct as it accurately represents the percentage of earnings saved. Choice A (30%) is incorrect because it's lower than the actual percentage saved. Choice C (40%) is incorrect because it's higher than the actual percentage saved. Choice D (25%) is also incorrect because it's lower than the actual percentage saved.

Correct Answer: B

Rationale: To find the percentage of band members who missed practice, we need to calculate the ratio of band members who missed practice to the total band members. 9 out of 75 band members missed practice, so the ratio is 9/75 = 0.12 or 12%. Therefore, the correct answer is B (12%). Choice A (10%) is incorrect as 9 out of 75 is not equivalent to 10%. Choice C (15%) is incorrect as 9 out of 75 is not equivalent to 15%. Choice D (18%) is incorrect as 9 out of 75 is not equivalent to 18%.

Correct Answer: D

Rationale: To convert 45 kg to pounds, we use the conversion factor 1 kg = 2.20462 pounds. So, 45 kg * 2.20462 pounds/kg = 99.2079 pounds, which rounds to 110 pounds. Therefore, the correct answer is D. Choice A (10 pounds) is incorrect as it is much lower than the actual conversion. Choice B (100 pounds) is close but slightly lower than the accurate value. Choice C (1,000 pounds) is significantly higher and not a reasonable conversion for 45 kg.

Correct Answer: B

Rationale: To find the total number of games played, we divide the number of games won (72) by the percentage of games won (90%). This gives us 72 / 0.90 = 80 games played. Therefore, choice B is correct. Choice A (75) is incorrect because it does not account for the percentage of games won. Choice C (85) is incorrect as it overestimates the total number of games played. Choice D (100) is incorrect as it does not reflect the fact that the team won only 90% of the games played.