HESI A2 Math Practice Test 2023 - Nurselytic

Correct Answer: A

Rationale:
To find the weight in pounds, divide the weight in grams by the conversion factor (453.59 grams per pound). 3,459 grams · 453.59 = approximately 7 lbs 10 oz.
Therefore, choice A (7 lbs 10 oz) is the correct answer.
Choice B (10 lbs 7 oz) and
Choice C (13 lbs 3 oz) are incorrect as they do not correspond to the correct conversion.
Choice D (3 lbs 13 oz) is incorrect as it does not account for the additional pounds derived from dividing 3,459 grams by the conversion factor.

Correct Answer: C

Rationale: The metric system is based on powers of 10, making calculations and conversions easier because each unit increases or decreases by a factor of 10. This factor allows for a simple and consistent way to move between different units within the system.
Choice A, 'The length of Napoleon's forearm' is incorrect as the metric system is not based on a physical attribute but on a standardized mathematical factor.
Choice B, '2,' and
Choice D, 'Atomic weight of helium,' are also incorrect as they do not align with the foundational principle of the metric system being based on powers of 10.

Correct Answer: B

Rationale: The correct answer to the question "What factor is used to convert pounds to kilograms?" is
B) 2.2.


To convert pounds to kilograms, you need to use the conversion factor of 2.2. This means that to convert a weight in pounds to kilograms, you would multiply the weight in pounds by 2.2. This conversion factor is derived from the fact that 1 pound is approximately equal to 0.453592 kilograms.
Therefore, multiplying by 2.2 allows for an easy and accurate conversion between the two units.

Option
A) 1.8 is incorrect because it is not the correct conversion factor for pounds to kilograms. Option
C) 2.5 and Option
D) 2 are also incorrect as they do not accurately represent the conversion between pounds and kilograms.

Understanding conversion factors between different units of measurement is crucial in various fields, especially in healthcare where accurate measurements are essential. Nurses and healthcare professionals often need to convert weights between pounds and kilograms when administering medications or assessing a patient's condition.
Therefore, mastering these conversion factors is vital for accurate and efficient practice.

Correct Answer: B

Rationale: In this mathematics question, the correct answer is
B) 44.
To find 80% of 55, you need to multiply 55 by 0.80 (which is the decimal equivalent of 80%). So, 55 x 0.80 = 44.
Therefore, option B is correct.

Option
A) 40 is incorrect because it is not the result of multiplying 55 by 0.80. Option
C) 39 and option
D) 45 are also incorrect for the same reason.

Educationally, this question assesses the test taker's understanding of percentages and how to calculate a percentage of a given number. It also tests basic arithmetic skills. Understanding percentages is crucial in various real-life situations, such as calculating discounts, tips, or even understanding data in fields like science and economics. Mastering this skill is essential for success not only in math but also in many practical applications.

Correct Answer: A

Rationale:
To divide mixed numbers, convert them to improper fractions and then multiply by the reciprocal of the divisor. Here, 4 7/8 = 39/8 and 1 1/6 = 7/6. Dividing 39/8 by 7/6 gives 39/8 · 7/6 = 39/8 * 6/7 = 234/56 = 4 5/28.
Therefore, the correct answer is A.

Choices B, C, and D are incorrect as they do not represent the correct result of dividing 4 7/8 by 1 1/6.