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 25 mg of a drug 4 times a day for 7 days. The tablets contain 50 mg each. How many tablets N are needed for the whole course? The tablets are scored, so they can be broken in half.

25 mg4× per day7 days50 mg/tablet
N = tablets
2.Easy
? × 50 mg

A patient is prescribed 75 mg of a drug. The tablets on the ward contain 50 mg each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

75 mg50 mg/tablet
n = tablets
3.Medium
40 kgBSA = 1.22 m²20 mg/m²D = ? mg

A patient weighing 40 kg has a body surface area of 1.22 m². The prescription is 20 mg/m². Find the dose D in mg.

40 kgBSA = 1.22 m²20 mg/m²
D = mg
4.Medium
024681010 mL

A child weighing 26 kg is prescribed 5 mg/kg of a drug. The stock solution contains 50 mg/mL. Draw up the dose: what volume V do you give?

26 kg5 mg/kg50 mg/mL
V = mL
5.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 920 units of a drug that comes as 1000 units/mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

920 units1000 units/mL
V = mL
6.Hard
40k units500 mL? mL/h1000 units/h

An infusion contains 40000 units of a drug in 500 mL. The prescription is 1000 units per hour. At what rate R do you set the pump, in mL/h?

40000 units/500 mL1000 units/h
R = mL/h

Answer key

  1. 1. N = 14 tablets
  2. 2. n = 1.5 tablets
  3. 3. D = 24.4 mg
  4. 4. V = 2.6 mL
  5. 5. V = 0.92 mL
  6. 6. R = 12.5 mL/h

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