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 mg

A patient is prescribed 50 mg of a drug. The tablets on the ward contain 100 mg each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

50 mg100 mg/tablet
n = tablets
2.Easy
500 mg/10 mLV = ? mL

The prescription is 375 mg. The stock solution contains 500 mg in 10 mL. What volume V do you draw up?

375 mg500 mg/10 mL
V = mL
3.Medium
024681010 mL

A child weighing 9 kg is prescribed 10 mg/kg of a drug. The stock solution contains 25 mg/mL. Draw up the dose: what volume V do you give?

9 kg10 mg/kg25 mg/mL
V = mL
4.Medium
024681010 mL

A child weighing 32 kg is prescribed 2.5 mg/kg of a drug. The stock solution contains 20 mg/mL. Draw up the dose: what volume V do you give?

32 kg2.5 mg/kg20 mg/mL
V = mL
5.Hard
40k units250 mL? mL/h2000 units/h

An infusion contains 40000 units of a drug in 250 mL. The prescription is 2000 units per hour. At what rate R do you set the pump, in mL/h?

40000 units/250 mL2000 units/h
R = mL/h
6.Hard
20k units1000 mL? mL/h500 units/h

An infusion contains 20000 units of a drug in 1000 mL. The prescription is 500 units per hour. At what rate R do you set the pump, in mL/h?

20000 units/1000 mL500 units/h
R = mL/h

Answer key

  1. 1. n = 0.5 tablets
  2. 2. V = 7.5 mL
  3. 3. V = 3.6 mL
  4. 4. V = 4 mL
  5. 5. R = 12.5 mL/h
  6. 6. R = 25 mL/h

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