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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1.Easy
? × 125 mg

A patient is prescribed 62.5 mg of a drug. The tablets on the ward contain 125 mg each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

62.5 mg125 mg/tablet
n = tablets
2.Easy
40 mg/1 mLV = ? mL

The prescription is 0.24 g of a drug intravenously. The reconstituted vial contains 40 mg per mL. What volume V do you draw up?

0.24 g40 mg/mL
V = mL
3.Medium
5%w/vV = ? mL

A dose of 125 mg is needed from a 5% (w/v) solution. What volume V contains this dose?

125 mg5% w/v
V = mL
4.Medium
024681010 mL

A child weighing 24 kg is prescribed 3 mg/kg of a drug. The stock solution contains 40 mg/mL. Draw up the dose: what volume V do you give?

24 kg3 mg/kg40 mg/mL
V = mL
5.Hard
25k units250 mL? mL/h1200 units/h

An infusion contains 25000 units of a drug in 250 mL. The prescription is 1200 units per hour. At what rate R do you set the pump, in mL/h?

25000 units/250 mL1200 units/h
R = mL/h
6.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 3300 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?

3300 units10000 units/mL
V = mL

Answer key

  1. 1. n = 0.5 tablets
  2. 2. V = 6 mL
  3. 3. V = 2.5 mL
  4. 4. V = 1.8 mL
  5. 5. R = 12 mL/h
  6. 6. V = 0.33 mL

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