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
? × 5 mg

A patient is prescribed 12.5 mg of a drug. The tablets on the ward contain 5 mg each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

12.5 mg5 mg/tablet
n = tablets
2.Easy
0123455 mL

The prescription is 8 mg. The stock solution contains 10 mg in 1 mL. Draw up the dose in the syringe: what volume V do you give?

8 mg10 mg/1 mL
V = mL
3.Medium
90 kg7.5 mg/kgD = ? mg

A patient weighs 90 kg and is prescribed 7.5 mg/kg as a single dose. Find the dose D in mg.

90 kg7.5 mg/kg
D = mg
4.Medium
25 kg15 mg/kgD = ? mg

A patient weighs 25 kg and is prescribed 15 mg/kg as a single dose. Find the dose D in mg.

25 kg15 mg/kg
D = mg
5.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 1400 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?

1400 units5000 units/mL
V = mL
6.Hard
40 mg/1 mLV = ? mL

A child weighing 14 kg is prescribed 12.5 mg/kg per dose of an oral suspension that contains 40 mg in 1 mL. What volume V do you give? Round to one decimal place.

14 kg12.5 mg/kg40 mg/1 mL
V = mL

Answer key

  1. 1. n = 2.5 tablets
  2. 2. V = 0.8 mL
  3. 3. D = 675 mg
  4. 4. D = 375 mg
  5. 5. V = 0.28 mL
  6. 6. V = 4.4 mL

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