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 mg

A patient is prescribed 500 mg of a drug 2 times a day for 10 days. The tablets contain 500 mg each. How many tablets N are needed for the whole course?

500 mg2× per day10 days500 mg/tablet
N = tablets
2.Easy
? × 50 mg

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

50 mg50 mg/tablet
n = tablets
3.Medium
45 kg7.5 mg/kgD = ? mg

A patient weighs 45 kg and is prescribed 7.5 mg/kg as a single dose. Find the dose D in mg.

45 kg7.5 mg/kg
D = mg
4.Medium
024681010 mL

A child weighing 8 kg is prescribed 2.5 mg/kg of a drug. The stock solution contains 10 mg/mL. Draw up the dose: what volume V do you give?

8 kg2.5 mg/kg10 mg/mL
V = mL
5.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 550 micrograms. The ampoule contains 1 mg/mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

550 mcg1 mg/mL
V = mL
6.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 0.43 mg. The ampoule contains 1000 micrograms per mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

0.43 mg1000 mcg/mL
V = mL

Answer key

  1. 1. N = 20 tablets
  2. 2. n = 1 tablets
  3. 3. D = 337.5 mg
  4. 4. V = 2 mL
  5. 5. V = 0.55 mL
  6. 6. V = 0.43 mL

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