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
? × 25 mg

A patient is prescribed 62.5 mg of a drug. The tablets on the ward contain 25 mg each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

62.5 mg25 mg/tablet
n = tablets
2.Easy
? × 12.5 mg

A patient is prescribed 6.25 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.

6.25 mg12.5 mg/tablet
n = tablets
3.Medium
30 kg15 mg/kgD = ? mg

A patient weighs 30 kg and is prescribed 15 mg/kg as a single dose. Find the dose D in mg.

30 kg15 mg/kg
D = mg
4.Medium
45 kg10 mg/kgD = ? mg

A patient weighs 45 kg and is prescribed 10 mg/kg as a single dose. Find the dose D in mg.

45 kg10 mg/kg
D = mg
5.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 1160 micrograms. The ampoule contains 2 mg/mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

1160 mcg2 mg/mL
V = mL
6.Hard
10%stockwater = ? mL

You must prepare 100 mL of a 2% (w/v) solution from a 10% (w/v) stock solution. How much water W must be added to the stock?

C₁ = 10%C₂ = 2%V₂ = 100 mL
W = mL

Answer key

  1. 1. n = 2.5 tablets
  2. 2. n = 0.5 tablets
  3. 3. D = 450 mg
  4. 4. D = 450 mg
  5. 5. V = 0.58 mL
  6. 6. W = 80 mL

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