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
? × 12.5 mg

A patient is prescribed 12.5 mg of a drug. The tablets on the ward contain 12.5 mg each. How many tablets n do you give?

12.5 mg12.5 mg/tablet
n = tablets
2.Easy
200 mg/5 mLV = ? mL

The prescription is 120 mg. The stock solution contains 200 mg in 5 mL. What volume V do you draw up?

120 mg200 mg/5 mL
V = mL
3.Medium
38 kgBSA = 1.13 m²250 mg/m²D = ? mg

A patient weighing 38 kg has a body surface area of 1.13 m². The prescription is 250 mg/m². Find the dose D in mg.

38 kgBSA = 1.13 m²250 mg/m²
D = mg
4.Medium
1%w/vV = ? mL

A dose of 100 mg is needed from a 1% (w/v) solution. What volume V contains this dose?

100 mg1% w/v
V = mL
5.Hard
40 mg/1 mLV = ? mL

A patient weighs 46.2 lb. The prescription is 10 mg/kg as a single dose, and the stock contains 40 mg in 1 mL. Using 1 kg = 2.2 lb, what volume V do you give? Round to one decimal place.

46.2 lb10 mg/kg40 mg/1 mL1 kg = 2.2 lb
V = mL
6.Hard
40k units250 mL? mL/h1200 units/h

An infusion contains 40000 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?

40000 units/250 mL1200 units/h
R = mL/h

Answer key

  1. 1. n = 1 tablets
  2. 2. V = 3 mL
  3. 3. D = 282.5 mg
  4. 4. V = 10 mL
  5. 5. V = 5.3 mL
  6. 6. R = 7.5 mL/h

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