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
? × 250 mg

A patient is prescribed 250 mg of a drug. The tablets on the ward contain 250 mg each. How many tablets n do you give?

250 mg250 mg/tablet
n = tablets
2.Easy
40 mg/1 mLV = ? mL

The prescription is 80 mg. The stock solution contains 40 mg in 1 mL. What volume V do you draw up?

80 mg40 mg/1 mL
V = mL
3.Medium
12 kg15 mg/kg/day4× per dayD = ? mg

A patient weighs 12 kg. The prescribed dose is 15 mg/kg per day, given in 4 equal doses. How many milligrams D are given per dose?

12 kg15 mg/kg/day4× per day
D = mg
4.Medium
024681010 mL

A child weighing 6 kg is prescribed 20 mg/kg of a drug. The stock solution contains 40 mg/mL. Draw up the dose: what volume V do you give?

6 kg20 mg/kg40 mg/mL
V = mL
5.Hard
61 kg163 cmBSA = √(h·w/3600)50 mg/m²D = ? mg

A patient is 163 cm tall and weighs 61 kg. The prescription is 50 mg/m². Using the Mosteller formula BSA = √(height (cm) × weight (kg)/3600), find the dose D in mg.

163 cm61 kg50 mg/m²
D = mg
6.Hard
50k units500 mL? mL/h800 units/h

An infusion contains 50000 units of a drug in 500 mL. The prescription is 800 units per hour. At what rate R do you set the pump, in mL/h?

50000 units/500 mL800 units/h
R = mL/h

Answer key

  1. 1. n = 1 tablets
  2. 2. V = 2 mL
  3. 3. D = 45 mg
  4. 4. V = 3 mL
  5. 5. D = 83.1 mg
  6. 6. R = 8 mL/h

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