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
? × 12.5 mg

A patient is prescribed 31.25 mg of a drug. The tablets on the ward contain 12.5 mg each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

31.25 mg12.5 mg/tablet
n = tablets
2.Easy
0123455 mL

The prescription is 62.5 mg. The stock solution contains 25 mg in 1 mL. Draw up the dose in the syringe: what volume V do you give?

62.5 mg25 mg/1 mL
V = mL
3.Medium
024681010 mL

A child weighing 22 kg is prescribed 4 mg/kg of a drug. The stock solution contains 40 mg/mL. Draw up the dose: what volume V do you give?

22 kg4 mg/kg40 mg/mL
V = mL
4.Medium
1:1000ampouleV = ? mL

An ampoule of epinephrine (adrenaline) is labelled 1:1000 (1 mg/mL). The prescription is 0.5 mg IM for anaphylaxis. What volume V do you draw up?

1:10000.5 mg
V = mL
5.Hard
50%stockV₁ = ? mL

You must prepare 250 mL of a 2% (w/v) solution from a 50% (w/v) stock solution. What volume of stock V₁ do you need?

C₁ = 50%C₂ = 2%V₂ = 250 mL
V₁ = mL
6.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 590 micrograms. The ampoule contains 1 mg/mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

590 mcg1 mg/mL
V = mL

Answer key

  1. 1. n = 2.5 tablets
  2. 2. V = 2.5 mL
  3. 3. V = 2.2 mL
  4. 4. V = 0.5 mL
  5. 5. V₁ = 10 mL
  6. 6. V = 0.59 mL

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