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.

New worksheetPractise online with hints

For teachers: free to print, copy and use in class. Every new worksheet has new values and its own answer key. A link to ExamProblems on your course page is appreciated.

Name: ____________________   Date: ____________

1.Easy
100 mg/5 mLV = ? mL

The prescription is 120 mg. The stock solution contains 100 mg in 5 mL. What volume V do you draw up?

120 mg100 mg/5 mL
V = mL
2.Easy
250 mg/5 mLV = ? mL

The prescription is 187.5 mg. The stock solution contains 250 mg in 5 mL. What volume V do you draw up?

187.5 mg250 mg/5 mL
V = mL
3.Medium
25 kg20 mg/kgD = ? mg

A patient weighs 25 kg and is prescribed 20 mg/kg as a single dose. Find the dose D in mg.

25 kg20 mg/kg
D = mg
4.Medium
2 g+ 9.2 mLV = ? mL

A vial contains 2 g of powder. The label says: add 9.2 mL of water for injection to give a total volume of 10 mL. The prescription is 240 mg. What volume V of the reconstituted solution do you give?

2 g+ 9.2 mL → 10 mL240 mg
V = mL
5.Hard
20%stockV₁ = ? mL

You must prepare 1000 mL of a 2.5% (w/v) solution from a 20% (w/v) stock solution. What volume of stock V₁ do you need?

C₁ = 20%C₂ = 2.5%V₂ = 1000 mL
V₁ = mL
6.Hard
125 mg/5 mLV = ? mL

A patient weighs 145.2 lb. The prescription is 0.5 mg/kg as a single dose, and the stock contains 125 mg in 5 mL. Using 1 kg = 2.2 lb, what volume V do you give? Round to one decimal place.

145.2 lb0.5 mg/kg125 mg/5 mL1 kg = 2.2 lb
V = mL

Answer key

  1. 1. V = 6 mL
  2. 2. V = 3.75 mL
  3. 3. D = 500 mg
  4. 4. V = 1.2 mL
  5. 5. V₁ = 125 mL
  6. 6. V = 1.3 mL

Full step-by-step solutions: practise this topic on examproblems.com.