Chapter 3 – Mathematics Review and Introduction to Dosage Calculation (2025/2026) | Nursing Math, Drug Dosage, and Medication Calculation Study Guide

Chapter 3: Mathematics Review and Introduction to
Dosage Calculation




the part of a whole number based on a system of units of ten (ex: 0.5 is
5 tenths of 1)
decimal




the dividing point between whole numbers and parts of numbers in a
system based on units of ten.
decimal point




the bottom number in a fraction, the dividing number
denominator




the number to be divided in a division problem.
dividend




the number the dividend is divided by or that is divided into the
dividend.
divisor

, a part of a whole number obtained by dividing one number by a larger
number.
fraction




a fraction that has a top number that is larger than the bottom number.
improper fraction




drug delivery into the body by injection just under the top part of the
skin.
intradermal (ID)




drug delivery into the body by injection into the muscle.
intramuscular (IM)




whole numbers with a fraction attached
mixed-number fractions




the top number in a fraction that is divided by the bottom number
numerator