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
100 mcg/1 mLV = ? mL

The prescription is 0.075 mg by injection. The ampoule is labelled 100 micrograms per mL. What volume V do you draw up?

0.075 mg100 mcg/mL
V = mL
2.Easy
? × 10 mg

A patient is prescribed 20 mg of a drug. The tablets on the ward contain 10 mg each. How many tablets n do you give?

20 mg10 mg/tablet
n = tablets
3.Medium
70 kg10 mg/kgD = ? mg

A patient weighs 70 kg and is prescribed 10 mg/kg as a single dose. Find the dose D in mg.

70 kg10 mg/kg
D = mg
4.Medium
80 kg10 mg/kg/day2× per dayD = ? mg

A patient weighs 80 kg. The prescribed dose is 10 mg/kg per day, given in 2 equal doses. How many milligrams D are given per dose?

80 kg10 mg/kg/day2× per day
D = mg
5.Hard
50%stockV₁ = ? mL

You must prepare 250 mL of a 2.5% (w/v) solution from a 50% (w/v) stock solution. What volume of stock V₁ do you need?

C₁ = 50%C₂ = 2.5%V₂ = 250 mL
V₁ = mL
6.Hard
250 mg/5 mLV = ? mL

A child weighing 14 kg is prescribed 15 mg/kg per dose of an oral suspension that contains 250 mg in 5 mL. What volume V do you give?

14 kg15 mg/kg250 mg/5 mL
V = mL

Answer key

  1. 1. V = 0.75 mL
  2. 2. n = 2 tablets
  3. 3. D = 700 mg
  4. 4. D = 400 mg
  5. 5. V₁ = 12.5 mL
  6. 6. V = 4.2 mL

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