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
0123455 mL

The prescription is 32.5 mg. The stock solution contains 25 mg in 1 mL. Draw up the dose in the syringe: what volume V do you give?

32.5 mg25 mg/1 mL
V = mL
2.Easy
50 mg/1 mLV = ? mL

The prescription is 30 mg. The stock solution contains 50 mg in 1 mL. What volume V do you draw up?

30 mg50 mg/1 mL
V = mL
3.Medium
1:10 000ampouleV = ? mL

A prefilled syringe of epinephrine (adrenaline) is labelled 1:10 000 (0.1 mg/mL). The prescription is 1 mg IV in cardiac arrest. What volume V do you give?

1:10 0001 mg
V = mL
4.Medium
024681010 mL

A child weighing 36 kg is prescribed 4 mg/kg of a drug. The stock solution contains 40 mg/mL. Draw up the dose: what volume V do you give?

36 kg4 mg/kg40 mg/mL
V = mL
5.Hard
50%stockV₁ = ? mL

You must prepare 100 mL of a 2.5% (w/v) solution from a 50% (w/v) stock solution. What volume of stock V₁ do you need?

C₁ = 50%C₂ = 2.5%V₂ = 100 mL
V₁ = mL
6.Hard
20k units500 mL? mL/h500 units/h

An infusion contains 20000 units of a drug in 500 mL. The prescription is 500 units per hour. At what rate R do you set the pump, in mL/h?

20000 units/500 mL500 units/h
R = mL/h

Answer key

  1. 1. V = 1.3 mL
  2. 2. V = 0.6 mL
  3. 3. V = 10 mL
  4. 4. V = 3.6 mL
  5. 5. V₁ = 5 mL
  6. 6. R = 12.5 mL/h

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