Hosa Medical Math Questions with Complete Solutions 2024/2025

Hosa Medical Math Questions with
Complete Solutions 2024/2025
quart - ANSWER qt


tablespoon - ANSWER tbsp or T


teaspoon - ANSWER tsp or t


drop or drops - ANSWER gtt or gtts



Clark's Rule for Child's Dosing - ANSWER (weight in lbs/150) x adult
dose or
(weight in kg/68) x adult dose


frieds rule for infant dose - ANSWER (age in months/150) x adult dose



Young's Rule for Child's Dosing - ANSWER age in years/ (age in years + 12) x adult
dose= childs dose


ratio for strength of solutions - ANSWER amount of drug/ amount of solution


Percent of Strength by Volume - ANSWER (volume of solute/volume of solution) x 100


percent strength by weight (mass) - ANSWER mass of solute/volume of solution x 100

, amount of solute/amount of first solution - ANSWER Amount of Solute / Amount of
Second Solution


pediatric rounding - ANSWER always round down to avoid overdose



Basic dosage calculation formula - ANSWER (desired dose ÷ amount on hand) ×
volume = dose [units/mL]



IV drop rate formula - ANSWER (volume[mL] ÷ time[min]) × drop factor [gtts/ml] = flow
rate [gtts/min]


IV mL rate formula - ANSWER (volume[mL] ÷ time[hr]) = flow rate [mL/hr]


Dosage calculation by weight - ANSWER weight (kg) × dosage (kg) = required dosage



Amount in IV fluid - ANSWER (concentration % ÷ 100) × volume [mL] = dosage
amount [g]


normal saline - ANSWER 0.9% NaCl


Juice glass - ANSWER 6 oz


coffee cup - ANSWER 8 oz


water glass - ANSWER 7 oz