HESI Dosage Calculations Free Practice Tests

HESI Dosage Calculations (HESI-DC) Practice Tests & Test Prep by Exam Edge - Free Test

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HESI HESI-DC Practice Test Features

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Our free HESI Dosage Calculations (HESI-DC) Practice Test was created by experienced educators who designed them to align with the official Health Education Systems, Inc content guidelines. They were built to accurately mirror the real exam's structure, coverage of topics, difficulty, and types of questions.

Upon completing your free practice test, it will be instantly reviewed to give you an idea of your score and potential performance on the actual test. Carefully study your feedback to each question to assess whether your responses were correct or incorrect. This is an effective way to highlight your strengths and weaknesses across different content areas, guiding you on where to concentrate your study efforts for improvement on future tests. Our detailed explanations will provide the information you need to enhance your understanding of the exam content and help you build your knowledge base leading you to better test results.

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HESI Dosage Calculations Sample Test

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If a Roman numeral is placed before a larger Roman numeral this means which of the following?

Correct Answer:

it is subtracted from the larger roman numeral.

in roman numerals, the placement of a smaller numeral before a larger numeral indicates subtraction. this rule is part of the subtractive notation used to avoid four consecutive identical numerals.

the principle behind this notation is straightforward: instead of adding the value of the numerals together as is done when a smaller numeral follows a larger numeral, the value of the numeral placed before is subtracted from the numeral that follows. this method of notation helps in reducing the length of the numeral and making it more easily readable.

for example, the roman numeral for four is not represented as iiii (which is simply additive notation), but rather as iv. here, i (1) is placed before v (5), and according to the rule, it is subtracted, making iv equal to 4 (5 - 1 = 4). similarly, ix represents 9, which is calculated by subtracting i (1) from x (10), resulting in 9 (10 - 1 = 9).

other examples include xl for 40, where x (10) is subtracted from l (50), resulting in 40 (50 - 10 = 40), and xc for 90, calculated by subtracting x (10) from c (100) to get 90 (100 - 10 = 90).

this subtractive notation is used only in specific instances and is typically limited to combinations where the smaller numeral is either one-fifth or one-tenth the value of the larger numeral. this rule ensures consistency and avoids confusion in the interpretation of roman numerals. thus, understanding this principle is crucial for correctly reading and writing roman numerals.