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
200 mg/5 mLV = ? mL

The prescription is 150 mg. The stock solution contains 200 mg in 5 mL. What volume V do you draw up?

150 mg200 mg/5 mL
V = mL
2.Easy
? × 25 mg

A patient is prescribed 50 mg of a drug 2 times a day for 7 days. The tablets contain 25 mg each. How many tablets N are needed for the whole course?

50 mg2× per day7 days25 mg/tablet
N = tablets
3.Medium
024681010 mL

A child weighing 32 kg is prescribed 3 mg/kg of a drug. The stock solution contains 10 mg/mL. Draw up the dose: what volume V do you give?

32 kg3 mg/kg10 mg/mL
V = mL
4.Medium
024681010 mL

A child weighing 8 kg is prescribed 20 mg/kg of a drug. The stock solution contains 20 mg/mL. Draw up the dose: what volume V do you give?

8 kg20 mg/kg20 mg/mL
V = mL
5.Hard
28 kg133 cmBSA = √(h·w/3600)75 mg/m²D = ? mg

A patient is 133 cm tall and weighs 28 kg. The prescription is 75 mg/m². Using the Mosteller formula BSA = √(height (cm) × weight (kg)/3600), find the dose D in mg.

133 cm28 kg75 mg/m²
D = mg
6.Hard
50%stockV₁ = ? mL

You must prepare 500 mL of a 0.5% (w/v) solution from a 50% (w/v) stock solution. What volume of stock V₁ do you need?

C₁ = 50%C₂ = 0.5%V₂ = 500 mL
V₁ = mL

Answer key

  1. 1. V = 3.75 mL
  2. 2. N = 28 tablets
  3. 3. V = 9.6 mL
  4. 4. V = 8 mL
  5. 5. D = 76.28 mg
  6. 6. V₁ = 5 mL

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