CALCULATING DRUG DOSAGES: A PATIENT-
SAFE APPROACH TO NURSING AND MATH
COMPLETE STUDY GUIDE AND MEDICATION
CALCULATION REVIEW 2026
◉ What are some common medication errors?
Answer: Common errors include wrong drug, wrong patient, wrong
route, omitted dose, expired drug, allergic reactions, wrong label,
wrong storage, and incorrect dosage.
◉ What methods are used for calculating medication dosages?
Answer: The dimensional analysis method, ratio and proportion
method, and formula method.
◉ What basic math operations are required for dosage calculations?
Answer: Addition, subtraction, multiplication, and division.
◉ What is the significance of significant figures in dosage
calculations?
Answer: For adults, calculations are to the 0.1 accuracy; for
pediatrics, to the 0.01 accuracy.
, ◉ What is dimensional analysis in dosage calculations?
Answer: A method to convert one unit of measurement to another
using conversion factors.
◉ What are conversion factors?
Answer: Numerical quantities used to multiply or divide to convert
between units.
◉ What are SI units?
Answer: Standard units of measurement from the International
System of Units, commonly used in scientific communities.
◉ What is the ratio and proportion method?
Answer: A method for calculating dosages based on the relationship
between known and unknown quantities.
◉ What is the formula method in dosage calculations?
Answer: A method that uses a specific formula to calculate the
required dosage based on given parameters.
◉ What is the importance of understanding medication labels?
Answer: Accurate reading and understanding of labels is crucial for
proper dosage calculations.
SAFE APPROACH TO NURSING AND MATH
COMPLETE STUDY GUIDE AND MEDICATION
CALCULATION REVIEW 2026
◉ What are some common medication errors?
Answer: Common errors include wrong drug, wrong patient, wrong
route, omitted dose, expired drug, allergic reactions, wrong label,
wrong storage, and incorrect dosage.
◉ What methods are used for calculating medication dosages?
Answer: The dimensional analysis method, ratio and proportion
method, and formula method.
◉ What basic math operations are required for dosage calculations?
Answer: Addition, subtraction, multiplication, and division.
◉ What is the significance of significant figures in dosage
calculations?
Answer: For adults, calculations are to the 0.1 accuracy; for
pediatrics, to the 0.01 accuracy.
, ◉ What is dimensional analysis in dosage calculations?
Answer: A method to convert one unit of measurement to another
using conversion factors.
◉ What are conversion factors?
Answer: Numerical quantities used to multiply or divide to convert
between units.
◉ What are SI units?
Answer: Standard units of measurement from the International
System of Units, commonly used in scientific communities.
◉ What is the ratio and proportion method?
Answer: A method for calculating dosages based on the relationship
between known and unknown quantities.
◉ What is the formula method in dosage calculations?
Answer: A method that uses a specific formula to calculate the
required dosage based on given parameters.
◉ What is the importance of understanding medication labels?
Answer: Accurate reading and understanding of labels is crucial for
proper dosage calculations.
