Questions and Answers
What is math anxiety?
What are the steps to overcoming math anxiety?
- Admit the fear and be willing to do something about it. 2. Replace negative thoughts with positive ones.
Give examples of mathematics in health care.
Calculating medical dosages, reading prescriptions, analyzing test results, weighing and measuring patients, taking temperatures, determining concentration levels, billing and record-keeping.
What is a numerical system?
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What is the most common numerical system?
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What are the Roman numerals and their values?
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If a smaller numeral is placed in front of a larger numeral, it is ______ from the larger numeral.
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When working with fractions, they must have the same denominator to add or subtract them.
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What is the primary purpose of the apothecary system?
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Which way should you move the decimal point to convert from a larger unit to a smaller unit in the metric system?
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How would you write 17 in Roman numerals?
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A patient is to receive 2.6 grams of medication available in capsules of 325 milligrams. How many capsules should be given?
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Study Notes
Math Anxiety
- Refers to a feeling of nervousness associated with math-related tasks and concepts.
- Individuals may believe they cannot understand or excel in math.
Overcoming Math Anxiety
- Acknowledge and be willing to address the fear.
- Replace negative thoughts with positive affirmations.
Mathematics in Health Care
- Important applications include calculating dosages, reading prescriptions, analyzing test results, measuring patients, taking temperatures, and billing.
Numerical Systems
- Organized methods for counting.
- Commonly used numerical systems include Hindu-Arabic (0-9) and Roman numerals.
Roman Numerals
- Developed over 3,000 years ago using letters to denote values.
- Key symbols include I (1), V (5), X (10), L (50), C (100), D (500), M (1000).
Rules for Roman Numerals
- Smaller numeral before a larger one means subtraction; after means addition.
- Cannot use the same numeral more than three times consecutively.
Working with Fractions
- Must have the same denominator for addition or subtraction.
- To multiply: multiply numerators and denominators. For division: flip the divisor and multiply.
Decimals
- Represent a fraction with a denominator that is a power of 10.
- Place values include tenths, hundredths, thousandths, etc.
Working with Decimals
- Align decimal points for addition/subtraction.
- Count decimal places in multiplication; adjust result accordingly.
Percentages
- Expressions of a part out of 100.
- Can be converted to decimals or fractions (e.g., 20% = 0.20 = 20/100 = 1/5).
Ratios
- Show relationships between like values, e.g., the comparison of unoccupied to occupied beds in a hospital.
- Ratios should be reduced to their simplest form.
Proportions
- Equate two ratios; the product of the means equals the product of the extremes.
- Used to solve equations for unknown terms.
Estimation Techniques
- Involves approximating answers based on mental calculations and determining feasibility.
Measurement Systems
- Includes the English system (commonly used in the U.S.), the metric system (standard in many countries), and the apothecary system (used for medication dosages).
English System Units
- Length: inch, foot, yard, mile.
- Weight: ounce, pound, ton.
- Volume: drop, teaspoon, tablespoon, ounce, cup, pint, quart, gallon.
Metric System Units
- Base units: Length (meters), Weight (grams), Volume (liters).
- Uses prefixes like kilo (1000), centi (0.01), and milli (0.001).
Apothecary System
- Traditional system for measuring weights and volumes used in healthcare.
- Includes units such as grains, ounces, and fluid ounces.
Nomenclature
- Distinct naming systems for different measurement units across various systems.
Medication and Prescription Labels
- NDC (National Drug Code) identifies specific medications.
- Caution generally advises against dispensing without a prescription.
Example Calculations
- Conversions among measurement systems illustrated, e.g., 27 inches equals 67.5 cm.
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Description
Explore the key concepts of math anxiety and strategies to overcome it. This quiz covers essential definitions and examples of mathematics in health care, providing valuable insights for students and professionals alike.
