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 18 mg. The stock solution contains 20 mg in 1 mL. Draw up the dose in the syringe: what volume V do you give?

18 mg20 mg/1 mL
V = mL
2.Easy
0123455 mL

The prescription is 140 mg. The stock solution contains 200 mg in 5 mL. Draw up the dose in the syringe: what volume V do you give?

140 mg200 mg/5 mL
V = mL
3.Medium
024681010 mL

A child weighing 10 kg is prescribed 10 mg/kg of a drug. The stock solution contains 50 mg/mL. Draw up the dose: what volume V do you give?

10 kg10 mg/kg50 mg/mL
V = mL
4.Medium
024681010 mL

A child weighing 7 kg is prescribed 5 mg/kg of a drug. The stock solution contains 25 mg/mL. Draw up the dose: what volume V do you give?

7 kg5 mg/kg25 mg/mL
V = mL
5.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 4500 units of a drug that comes as 10000 units/mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

4500 units10000 units/mL
V = mL
6.Hard
20%stockwater = ? mL

You must prepare 500 mL of a 0.5% (w/v) solution from a 20% (w/v) stock solution. How much water W must be added to the stock?

C₁ = 20%C₂ = 0.5%V₂ = 500 mL
W = mL

Answer key

  1. 1. V = 0.9 mL
  2. 2. V = 3.5 mL
  3. 3. V = 2 mL
  4. 4. V = 1.4 mL
  5. 5. V = 0.45 mL
  6. 6. W = 487.5 mL

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