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
400 mcg/1 mLV = ? mL

The prescription is 1 mg by injection. The ampoule is labelled 400 micrograms per mL. What volume V do you draw up?

1 mg400 mcg/mL
V = mL
2.Easy
? × 50 mcg

The prescription is 0.15 mg of a drug. The tablets contain 50 micrograms (mcg) each. How many tablets n do you give?

0.15 mg50 mcg/tablet
n = tablets
3.Medium
45 kg2 mg/kgD = ? mg

A patient weighs 45 kg and is prescribed 2 mg/kg as a single dose. Find the dose D in mg.

45 kg2 mg/kg
D = mg
4.Medium
1 g+ 4.2 mLV = ? mL

A vial contains 1 g of powder. The label says: add 4.2 mL of water for injection to give a total volume of 5 mL. The prescription is 200 mg. What volume V of the reconstituted solution do you give?

1 g+ 4.2 mL → 5 mL200 mg
V = mL
5.Hard
40k units1000 mL? mL/h1500 units/h

An infusion contains 40000 units of a drug in 1000 mL. The prescription is 1500 units per hour. At what rate R do you set the pump, in mL/h?

40000 units/1000 mL1500 units/h
R = mL/h
6.Hard
18 kg109 cmBSA = √(h·w/3600)175 mg/m²D = ? mg

A patient is 109 cm tall and weighs 18 kg. The prescription is 175 mg/m². Using the Mosteller formula BSA = √(height (cm) × weight (kg)/3600), find the dose D in mg.

109 cm18 kg175 mg/m²
D = mg

Answer key

  1. 1. V = 2.5 mL
  2. 2. n = 3 tablets
  3. 3. D = 90 mg
  4. 4. V = 1 mL
  5. 5. R = 37.5 mL/h
  6. 6. D = 129.2 mg

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