HESI A2 Practice Test Math

Correct Answer: C

Rationale: To calculate 0.9 divided by 3, we divide 0.9 by 3, which equals 0.3. This is the correct answer (C) because dividing 0.9 by 3 results in 0.3. Option A (0) is incorrect as the division does not equal 0. Option B (3) is incorrect as the result is not equal to 3. Option D (9) is incorrect as the division does not equal 9. Therefore, the correct answer is C (0.3).

Correct Answer: A

Rationale: To solve for x in the equation X/4 = 9/x, we can cross multiply to get X * x = 4 * 9. Simplifying further, we get x^2 = 36, so x = √36 = 6. Choice A (x = 6) is correct. Choices B, C, and D are incorrect because they do not satisfy the equation when substituted back in. B: 6/4 ≠ 9/6, C: 6/4 ≠ 9/9, D: 6/4 ≠ 9/2.

Correct Answer: A

Rationale: The correct answer is A: 579 copies. To find the number of copies each person made, divide the total number of copies (3,475) by the number of people who used the copier (6). 3,475 ÷ 6 = 579. Each person made 579 copies. Summary: - Choice B (680 copies) is incorrect because it does not evenly divide into the total number of copies. - Choice C (670 copies) is incorrect because it is not an even division of the total number of copies. - Choice D (585 copies) is incorrect because it is not the result of dividing the total number of copies by the number of people who used the copier.

Correct Answer: D

Rationale: To determine if a number is divisible by another, it must leave no remainder when divided. 7 is a prime number and can only be divided by 1 and itself (7). So, choices A and B are incorrect. Since 7 is a prime number, it is only divisible by numbers that are factors of 7 (1, 7) or itself. Therefore, choice C is also incorrect. The correct answer is D because 7 can be evenly divided by 2, 3, and 7 without any remainder, making it divisible by these numbers.

Correct Answer: A

Rationale: The correct answer is A: 55 mg/dL. To convert from mmol/L to mg/dL for glucose, you multiply by 18. Therefore, 5.5 mmol/L x 18 = 99 mg/dL. However, blood glucose levels are commonly approximated by dividing by 2, so 99 mg/dL ≈ 50 mg/dL. Therefore, the closest option is A: 55 mg/dL. Option B (5.5 mg/dL) is incorrect as it does not account for the conversion factor of 18. Option C (0.55 mg/dL) is incorrect as it is a decimal point off from the correct answer. Option D (550 mg/dL) is incorrect as it is a factor of 10 too high.