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
? × 500 mcg

The prescription is 0.25 mg of a drug. The tablets contain 500 micrograms (mcg) each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

0.25 mg500 mcg/tablet
n = tablets
2.Easy
0123455 mL

The prescription is 120 mg. The stock solution contains 250 mg in 5 mL. Draw up the dose in the syringe: what volume V do you give?

120 mg250 mg/5 mL
V = mL
3.Medium
024681010 mL

A child weighing 32 kg is prescribed 4 mg/kg of a drug. The stock solution contains 20 mg/mL. Draw up the dose: what volume V do you give?

32 kg4 mg/kg20 mg/mL
V = mL
4.Medium
1:10 000ampouleV = ? mL

A prefilled syringe of epinephrine (adrenaline) is labelled 1:10 000 (0.1 mg/mL). The prescription is 1 mg IV in cardiac arrest. What volume V do you give?

1:10 0001 mg
V = mL
5.Hard
20k units1000 mL? mL/h1250 units/h

An infusion contains 20000 units of a drug in 1000 mL. The prescription is 1250 units per hour. At what rate R do you set the pump, in mL/h?

20000 units/1000 mL1250 units/h
R = mL/h
6.Hard
40k units500 mL? mL/h1500 units/h

An infusion contains 40000 units of a drug in 500 mL. The prescription is 1500 units per hour. At what rate R do you set the pump, in mL/h?

40000 units/500 mL1500 units/h
R = mL/h

Answer key

  1. 1. n = 0.5 tablets
  2. 2. V = 2.4 mL
  3. 3. V = 6.4 mL
  4. 4. V = 10 mL
  5. 5. R = 62.5 mL/h
  6. 6. R = 18.75 mL/h

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