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/5 mLV = ? mL

The prescription is 375 mg. The stock solution contains 250 mg in 5 mL. What volume V do you draw up?

375 mg250 mg/5 mL
V = mL
2.Easy
? × 0.1 mg

The prescription is 150 micrograms (mcg) of a drug. The tablets contain 0.1 mg each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

150 mcg0.1 mg/tablet
n = tablets
3.Medium
024681010 mL

A child weighing 12 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?

12 kg5 mg/kg25 mg/mL
V = mL
4.Medium
024681010 mL

A child weighing 6 kg is prescribed 4 mg/kg of a drug. The stock solution contains 20 mg/mL. Draw up the dose: what volume V do you give?

6 kg4 mg/kg20 mg/mL
V = mL
5.Hard
10%stockV₁ = ? mL

You must prepare 1000 mL of a 2% (w/v) solution from a 10% (w/v) stock solution. What volume of stock V₁ do you need?

C₁ = 10%C₂ = 2%V₂ = 1000 mL
V₁ = mL
6.Hard
40k units1000 mL? mL/h1250 units/h

An infusion contains 40000 units of a drug in 1000 mL. The prescription is 1250 units per hour. At what rate R do you set the pump, in mL/h?

40000 units/1000 mL1250 units/h
R = mL/h

Answer key

  1. 1. V = 7.5 mL
  2. 2. n = 1.5 tablets
  3. 3. V = 2.4 mL
  4. 4. V = 1.2 mL
  5. 5. V₁ = 200 mL
  6. 6. R = 31.25 mL/h

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