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
? × 125 mg

A patient is prescribed 375 mg of a drug. The tablets on the ward contain 125 mg each. How many tablets n do you give?

375 mg125 mg/tablet
n = tablets
2.Easy
0123455 mL

The prescription is 100 mg. The stock solution contains 40 mg in 1 mL. Draw up the dose in the syringe: what volume V do you give?

100 mg40 mg/1 mL
V = mL
3.Medium
70 kg2 mg/kgD = ? mg

A patient weighs 70 kg and is prescribed 2 mg/kg as a single dose. Find the dose D in mg.

70 kg2 mg/kg
D = mg
4.Medium
0.5%10 mLm = ? mg

How many milligrams of drug m are in 10 mL of a 0.5% (w/v) solution?

0.5% w/v10 mL
m = mg
5.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 520 micrograms. The ampoule contains 2 mg/mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

520 mcg2 mg/mL
V = mL
6.Hard
46 kg128 cmBSA = √(h·w/3600)135 mg/m²D = ? mg

A patient is 128 cm tall and weighs 46 kg. The prescription is 135 mg/m². Using the Mosteller formula BSA = √(height (cm) × weight (kg)/3600), find the dose D in mg.

128 cm46 kg135 mg/m²
D = mg

Answer key

  1. 1. n = 3 tablets
  2. 2. V = 2.5 mL
  3. 3. D = 140 mg
  4. 4. m = 50 mg
  5. 5. V = 0.26 mL
  6. 6. D = 172.6 mg

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