HESI A2 Practice Test Math

Correct Answer: C

Rationale: The correct answer is C: 0.09%. To convert 0.0009 to a percentage, you move the decimal point two places to the right, resulting in 0.09%. Option A (0.009%) is incorrect as it would be the equivalent of 0.00009. Option B (0.9%) is incorrect as it represents 0.009. Option D (9%) is incorrect as it is equivalent to 0.09, which is 100 times greater than the given value.

Correct Answer: C

Rationale: To convert pints to ounces, we know that 1 pint is equal to 16 ounces. Therefore, to find the number of ounces in 8 & 1/4 pints, we multiply 8 by 16 (128 oz) and add 1/4 of 16 (4 oz). This gives us a total of 132 ounces (128 + 4). Therefore, the correct answer is C (132 oz). Option A is incorrect as it is the result of miscalculating the conversion. Option B and D are incorrect as they do not account for the additional 1/4 pint.

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.

Correct Answer: A

Rationale: The correct answer is A (175 mg). To find out how much calcium is left, subtract the lost amount (325 mg) from the original amount (500 mg): 500 mg - 325 mg = 175 mg. This calculation shows that 175 mg of calcium are left in the expired vitamin. Choice B (135 mg) is incorrect because it does not account for the correct subtraction of the lost amount. Choice C (185 mg) and Choice D (200 mg) are also incorrect as they do not reflect the accurate calculation based on the given information.

Correct Answer: B

Rationale: To find the equivalent dosage in milligrams, multiply the fraction of a tablet (3/4) by the total dosage in a full tablet (500mg). Calculation: (3/4) * 500 = 375mg Therefore, the correct answer is B (425mg). Other choices are incorrect because: A: 375mg - This is the incorrect calculation of the dosage equivalent. C: 450mg - This is not the correct result of the calculation. D: 475mg - This is also an incorrect calculation based on the given information.