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
? × 50 mg

A patient is prescribed 150 mg of a drug. The tablets on the ward contain 50 mg each. How many tablets n do you give?

150 mg50 mg/tablet
n = tablets
2.Easy
250 mg/5 mLV = ? mL

The prescription is 500 mg. The stock solution contains 250 mg in 5 mL. What volume V do you draw up?

500 mg250 mg/5 mL
V = mL
3.Medium
18 kg20 mg/kgD = ? mg

A patient weighs 18 kg and is prescribed 20 mg/kg as a single dose. Find the dose D in mg.

18 kg20 mg/kg
D = mg
4.Medium
18 kg2 mg/kg/day4× per dayD = ? mg

A patient weighs 18 kg. The prescribed dose is 2 mg/kg per day, given in 4 equal doses. How many milligrams D are given per dose?

18 kg2 mg/kg/day4× per day
D = mg
5.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 4200 units of a drug that comes as 5000 units/mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

4200 units5000 units/mL
V = mL
6.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 1.24 mg. The ampoule contains 4000 micrograms per mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

1.24 mg4000 mcg/mL
V = mL

Answer key

  1. 1. n = 3 tablets
  2. 2. V = 10 mL
  3. 3. D = 360 mg
  4. 4. D = 9 mg
  5. 5. V = 0.84 mL
  6. 6. V = 0.31 mL

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