Dosage calculations worksheet with answers

Free printable Dosage calculations worksheet: 6 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

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Name: ____________________   Date: ____________

1.Easy
? × 125 mg

A patient is prescribed 62.5 mg of a drug. The tablets on the ward contain 125 mg each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

62.5 mg125 mg/tablet
n = tablets
2.Easy
0123455 mL

The prescription is 135 mg. The stock solution contains 50 mg in 1 mL. Draw up the dose in the syringe: what volume V do you give?

135 mg50 mg/1 mL
V = mL
3.Medium
80 kg25 mg/kg/day4× per dayD = ? mg

A patient weighs 80 kg. The prescribed dose is 25 mg/kg per day, given in 4 equal doses. How many milligrams D are given per dose?

80 kg25 mg/kg/day4× per day
D = mg
4.Medium
71 kgBSA = 1.57 m²20 mg/m²D = ? mg

A patient weighing 71 kg has a body surface area of 1.57 m². The prescription is 20 mg/m². Find the dose D in mg.

71 kgBSA = 1.57 m²20 mg/m²
D = mg
5.Hard
52 kg145 cmBSA = √(h·w/3600)25 mg/m²D = ? mg

A patient is 145 cm tall and weighs 52 kg. The prescription is 25 mg/m². Using the Mosteller formula BSA = √(height (cm) × weight (kg)/3600), find the dose D in mg.

145 cm52 kg25 mg/m²
D = mg
6.Hard
46 kg156 cmBSA = √(h·w/3600)135 mg/m²D = ? mg

A patient is 156 cm tall and weighs 46 kg. The prescription is 135 mg/m². Using the Mosteller formula BSA = √(height (cm) × weight (kg)/3600), find the dose D in mg.

156 cm46 kg135 mg/m²
D = mg

Answer key

  1. 1. n = 0.5 tablets
  2. 2. V = 2.7 mL
  3. 3. D = 500 mg
  4. 4. D = 31.4 mg
  5. 5. D = 36.18 mg
  6. 6. D = 190.6 mg

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