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
? × 25 mg

A patient is prescribed 62.5 mg of a drug. The tablets on the ward contain 25 mg each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

62.5 mg25 mg/tablet
n = tablets
2.Easy
? × 125 mg

A patient is prescribed 375 mg of a drug. The tablets on the ward contain 125 mg each. How many tablets n do you give?

375 mg125 mg/tablet
n = tablets
3.Medium
024681010 mL

A child weighing 28 kg is prescribed 3 mg/kg of a drug. The stock solution contains 20 mg/mL. Draw up the dose: what volume V do you give?

28 kg3 mg/kg20 mg/mL
V = mL
4.Medium
024681010 mL

A child weighing 10 kg is prescribed 4 mg/kg of a drug. The stock solution contains 25 mg/mL. Draw up the dose: what volume V do you give?

10 kg4 mg/kg25 mg/mL
V = mL
5.Hard
57 kg165 cmBSA = √(h·w/3600)50 mg/m²D = ? mg

A patient is 165 cm tall and weighs 57 kg. The prescription is 50 mg/m². Using the Mosteller formula BSA = √(height (cm) × weight (kg)/3600), find the dose D in mg.

165 cm57 kg50 mg/m²
D = mg
6.Hard
60 kg141 cmBSA = √(h·w/3600)100 mg/m²D = ? mg

A patient is 141 cm tall and weighs 60 kg. The prescription is 100 mg/m². Using the Mosteller formula BSA = √(height (cm) × weight (kg)/3600), find the dose D in mg.

141 cm60 kg100 mg/m²
D = mg

Answer key

  1. 1. n = 2.5 tablets
  2. 2. n = 3 tablets
  3. 3. V = 4.2 mL
  4. 4. V = 1.6 mL
  5. 5. D = 80.82 mg
  6. 6. D = 153.3 mg

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