Dosage Calculations Made Easy for Nursing Students (eBook)

500+ Step-by-Step Practice Problems with Complete Solutions and Explanations

Stanley Lawrence Richardson (Autor)

eBook Download: EPUB

2025 | 1. Auflage
286 Seiten
Isohan Publishing (Verlag)
9780000972026 (ISBN)

Infos

Are you a nursing student struggling with medication math and dreading your next dosage calculation exam?

Master dosage calculations the safe and easy way with this comprehensive workbook featuring 500+ practice problems designed specifically for nursing students. This step-by-step guide transforms complex calculations into simple, manageable processes that build your confidence from basic math review through advanced clinical scenarios.

Inside this essential nursing companion, you'll discover:

Three proven calculation methods (dimensional analysis, ratio-proportion, and formula method) explained in clear, anxiety-reducing language

500+ practice problems with complete solutions and detailed explanations for every step

Progressive difficulty levels starting with basic conversions and advancing to complex IV drip rates and pediatric dosing

Real clinical scenarios that prepare you for actual nursing practice, not just exams

NCLEX-style questions aligned with current testing standards to boost your exam readiness

Common medication errors and how to avoid them, ensuring patient safety in your future practice

Quick reference charts for conversions, abbreviations, and formulas you'll use daily

Unlike other overwhelming textbooks, this guide addresses math anxiety head-on with encouraging explanations and multiple approaches to solve each problem type. Each chapter builds systematically on previous concepts, ensuring you never feel lost or overwhelmed.

Perfect for:

Nursing students at all levels (LPN, ADN, BSN, MSN)

NCLEX-RN and NCLEX-PN exam preparation

Practicing nurses seeking a comprehensive refresher

Nursing educators looking for supplemental teaching resources

Transform your calculation skills and walk into your exams with confidence. Join thousands of nursing students who have conquered their math fears and mastered medication calculations using this proven approach.

Textauszug

Category 1: Basic Arithmetic & Fractions

Problem 1: Convert the fraction 3/4 to a decimal.
Solution:
Step 1: Divide numerator by denominator → 3 ÷ 4 = 0.75
Answer: 0.75
Explanation: Dividing numerator by denominator converts a fraction to decimal.

Problem 2: Convert the fraction 5/8 into a decimal number.
Solution:
Step 1: Divide numerator by denominator → 5 ÷ 8 = 0.625
Answer: 0.625
Explanation: Decimal equivalent found by division.

Problem 3: Add the fractions 2/5 and 1/10. Express your answer as a simplified fraction.
Solution:
Step 1: Find the least common denominator (LCD) of 5 and 10, which is 10.
Step 2: Convert fractions: 2/5 = 4/10, 1/10 = 1/10
Step 3: Add numerators: 4 + 1 = 5
Step 4: Write sum over common denominator: 5/10
Step 5: Simplify fraction: 5/10 = 1/2
Answer: 1/2
Explanation: Convert to common denominator before adding fractions.

Problem 4: Subtract 3/7 from 5/7. Write the answer as a fraction.
Solution:
Step 1: Since denominators are the same, subtract numerators: 5 - 3 = 2
Step 2: Write result over denominator: 2/7
Answer: 2/7
Explanation: Same denominator means subtract only numerators.

Problem 5: Multiply the fractions 2/3 by 3/4. Simplify your answer.
Solution:
Step 1: Multiply numerators: 2 × 3 = 6
Step 2: Multiply denominators: 3 × 4 = 12
Step 3: Write fraction: 6/12
Step 4: Simplify fraction: 6/12 = 1/2
Answer: 1/2
Explanation: Multiply straight across numerator and denominator, then simplify.

Problem 6: Divide 4/5 by 2/3. Express your answer as a simplified mixed number or fraction.
Solution:
Step 1: Division of fractions means multiply by reciprocal: 4/5 ÷ 2/3 = 4/5 × 3/2
Step 2: Multiply numerators: 4 × 3 = 12
Step 3: Multiply denominators: 5 × 2 = 10
Step 4: Write fraction: 12/10
Step 5: Simplify fraction: 12/10 = 6/5
Step 6: Convert to mixed number: 6/5 = 1 1/5
Answer: 1 1/5
Explanation: Multiply by reciprocal then simplify; convert improper fraction to mixed number.

Problem 7: Convert the decimal 0.2 to a simplified fraction.
Solution:
Step 1: Write decimal as fraction: 0.2 = 2/10
Step 2: Simplify fraction: divide numerator and denominator by 2 → 2/10 = 1/5
Answer: 1/5
Explanation: Convert decimal to fraction and simplify.

Problem 8: Round the number 5.6789 to two decimal places.
Solution:
Step 1: Identify digit at hundredths place (second decimal place): 7
Step 2: Check the digit at the thousandths place (third decimal place): 8
Step 3: Since 8 ≥ 5, round the hundredths place up: 7 → 8
Step 4: Result: 5.68
Answer: 5.68
Explanation: Round up if next digit is 5 or greater.

Problem 9: Express 25% as a decimal number.
Solution:
Step 1: Percent means per hundred → 25% = 25/100
Step 2: Divide 25 by 100 = 0.25
Answer: 0.25
Explanation: Divide percentage by 100 to get decimal.

Problem 10: Calculate 15% of 200 mg.
Solution:
Step 1: Convert percentage to decimal: 15% = 0.15
Step 2: Multiply decimal by total amount: 0.15 × 200 mg = 30 mg
Answer: 30 mg
Explanation: Convert percent to decimal and multiply.

Problem 11: Increase 90 mg by one-third. Find the new amount.
Solution:
Step 1: Calculate one-third of 90 mg: 90 × (1/3) = 30 mg
Step 2: Add to original: 90 + 30 = 120 mg
Answer: 120 mg
Explanation: Find fraction of amount and add.

Problem 12: Decrease 250 mL by 18%. What is the remaining volume?
Solution:
Step 1: Calculate percentage remaining: 100% - 18% = 82%
Step 2: Convert to decimal: 82% = 0.82
Step 3: Multiply: 0.82 × 250 mL = 205 mL
Answer: 205 mL
Explanation: Multiply original volume by remaining percent.

Problem 13: Convert the fraction ⅗ to a percentage.
Solution:
Step 1: Convert fraction to decimal: 3 ÷ 5 = 0.6
Step 2: Convert decimal to percent: 0.6 × 100 = 60%
Answer: 60%
Explanation: Decimal × 100 = percentage.

Problem 14: Express 2.4 g as grams and milligrams.
Solution:
Step 1: Separate whole grams: 2 g
Step 2: Convert decimal part to mg: 0.4 g × 1000 = 400 mg
Answer: 2 g and 400 mg
Explanation: 1 g = 1000 mg.

Problem 15: Simplify the ratio 480 mg : 1.2 g to the lowest terms using the same units.
Solution:
Step 1: Convert 1.2 g to mg: 1.2 × 1000 = 1200 mg
Step 2: Write ratio: 480 : 1200
Step 3: Divide both by 240: 480 ÷ 240 = 2, 1200 ÷ 240 = 5
Answer: 2 : 5
Explanation: Use same units; divide both by their greatest common factor.

Problem 16: Convert 0.028 kg to milligrams.
Solution:
Step 1: Convert kg to g: 0.028 × 1000 = 28 g
Step 2: Convert g to mg: 28 × 1000 = 28000 mg
Answer: 28000 mg
Explanation: Multiply by 1000 twice (kg → g → mg).

Problem 17: Convert 65 µg to milligrams.
Solution:
Step 1: 1 mg = 1000 µg
Step 2: Convert: 65 ÷ 1000 = 0.065 mg
Answer: 0.065 mg
Explanation: Divide micrograms by 1000.

Problem 18: A vial contains 0.75 g/3 mL. Express the concentration in mg/mL.
Solution:
Step 1: Convert g to mg: 0.75 × 1000 = 750 mg
Step 2: Calculate concentration: 750 mg ÷ 3 mL = 250 mg/mL
Answer: 250 mg/mL
Explanation: Convert units and divide.

Problem 19: Convert 7.2 L to millilitres.
Solution:
Step 1: 1 L = 1000 mL
Step 2: 7.2 × 1000 = 7200 mL
Answer: 7200 mL
Explanation: Multiply litres by 1000.

Problem 20: What percentage of a 500 mL bag is 125 mL?
Solution:
Step 1: Divide part by whole: 125 ÷ 500 = 0.25
Step 2: Convert to percentage: 0.25 × 100 = 25%
Answer: 25%
Explanation: Part/whole × 100 = percentage.

Problem 21: Find 10% of 450 mg.
Solution:
Step 1: Convert percentage to decimal: 10% = 0.10
Step 2: Multiply: 0.10 × 450 mg = 45 mg
Answer: 45 mg
Explanation: Multiply total by decimal equivalent of percent.

Problem 22: Add 3/8 and 1/4. Express answer as a simplified fraction.
Solution:
Step 1: Find LCD of 8 and 4 = 8
Step 2: Convert fractions: 3/8 = 3/8; 1/4 = 2/8
Step 3: Add numerators: 3 + 2 = 5
Step 4: Result: 5/8
Answer: 5/8
Explanation: Convert to common denominator before adding.

Problem 23: Multiply 7/9 by 3/5.
Solution:
Step 1: Multiply numerators: 7 × 3 =...

Produkt-Details

• Erscheint lt. Verlag: 21.7.2025
• Sprache: englisch
• Themenwelt: Medizin / Pharmazie ► Allgemeines / Lexika
• ISBN-13: 9780000972026 / 9780000972026