HESI A2
HESI A2 Math Practice Exam
1. The physician ordered 16 mg of Ibuprofen per kg of body weight; on hand are 80 mg tablets. The child weighs 15 kg. How many tablets will you give?
- A. 3 tablets
- B. 2 tablets
- C. 1 tablet
- D. 2.5 tablets
Correct answer: B
Rationale: To calculate the total dose required for the child, multiply the child's weight (15 kg) by the prescribed dose per kg (16 mg/kg): 15 kg * 16 mg/kg = 240 mg. Next, determine how many tablets are needed to reach this total dose: 240 mg / 80 mg per tablet = 3 tablets. However, since you cannot give a fraction of a tablet, the correct answer is 2 tablets. Choice A is incorrect because it miscalculates the number of tablets needed. Choice C is incorrect because only 1 tablet is not sufficient to reach the required dose. Choice D is incorrect because you cannot give a partial tablet, so it has to be rounded down to the nearest whole tablet.
2. Select the word or phrase that makes the following sentence grammatically correct. Miguel and I are waiting to ___________ with the doctor.
- A. be met
- B. meeting
- C. met
- D. meet
Correct answer: D
Rationale: The verb 'meet' is the correct option in this context as it completes the sentence structure 'waiting to meet with the doctor' in a grammatically correct way. The sentence requires an infinitive verb form to convey the intended meaning of Miguel and I waiting to have a meeting or appointment with the doctor. Choices A, B, and C are incorrect because 'be met' changes the meaning, 'meeting' is a gerund form which doesn't fit the sentence structure, and 'met' is a past tense form that doesn't match the present tense context of the sentence.
3. What substance makes up the pads that provide support between the vertebrae?
- A. bone
- B. cartilage
- C. tendon
- D. fat
Correct answer: B
Rationale: Cartilage is the correct answer as it is the substance that makes up the pads between the vertebrae. Cartilage provides cushioning and support between the bones of the spine, allowing for flexibility and preventing friction between the vertebrae. Bone (choice A) is incorrect as it forms the structure of the vertebrae, not the intervertebral discs. Tendon (choice C) is incorrect as it connects muscle to bone and is not found between the vertebrae. Fat (choice D) is incorrect as it is not the substance that makes up the pads between the vertebrae.
4. Which of the following would be the best title for this passage?
- A. Bicycles are better.
- B. A ride through the history of bicycles.
- C. Cycle your way to fitness.
- D. The popularity of bicycles.
Correct answer: B
Rationale: The best title for this passage would be 'A ride through the history of bicycles' as it provides a comprehensive overview of the historical development of bicycles from their invention to modern times. Choice A, 'Bicycles are better,' is incorrect as it does not capture the essence of the passage, which focuses on the history and evolution of bicycles rather than their superiority. Choice C, 'Cycle your way to fitness,' is misleading as the passage does not primarily discuss the fitness aspect of cycling but instead focuses on the evolution of bicycle design. Choice D, 'The popularity of bicycles,' is too narrow as it only touches on one aspect mentioned briefly in the passage, while the passage covers a broader historical perspective.
5. Which of the following words fits best in the following sentence? ___________ the emergency room was not busy last night, the head nurse still did not let anyone end her shift early.
- A. Because
- B. Provided that
- C. As if
- D. Although
Correct answer: D
Rationale: The word 'although' is the best fit in the sentence because it indicates a contrast between the fact that the emergency room was not busy last night and the head nurse's decision not to let anyone end her shift early. 'Although' sets up a contrast by acknowledging the first part of the sentence while introducing the surprising or unexpected information that follows. Choices A, B, and C do not provide the appropriate contrast needed in this context. 'Because' implies causation, 'Provided that' implies a condition for something to happen, and 'As if' implies a comparison rather than a contrast.
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