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
? × 5 mg

A patient is prescribed 2.5 mg of a drug. The tablets on the ward contain 5 mg each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

2.5 mg5 mg/tablet
n = tablets
2.Easy
? × 125 mg

A patient is prescribed 375 mg of a drug. The tablets on the ward contain 125 mg each. How many tablets n do you give?

375 mg125 mg/tablet
n = tablets
3.Medium
18 kg15 mg/kg/day4× per dayD = ? mg

A patient weighs 18 kg. The prescribed dose is 15 mg/kg per day, given in 4 equal doses. How many milligrams D are given per dose?

18 kg15 mg/kg/day4× per day
D = mg
4.Medium
024681010 mL

A child weighing 20 kg is prescribed 2.5 mg/kg of a drug. The stock solution contains 50 mg/mL. Draw up the dose: what volume V do you give?

20 kg2.5 mg/kg50 mg/mL
V = mL
5.Hard
125 mg/5 mLV = ? mL

A patient weighs 187 lb. The prescription is 1 mg/kg as a single dose, and the stock contains 125 mg in 5 mL. Using 1 kg = 2.2 lb, what volume V do you give?

187 lb1 mg/kg125 mg/5 mL1 kg = 2.2 lb
V = mL
6.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 4600 units of a drug that comes as 10000 units/mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

4600 units10000 units/mL
V = mL

Answer key

  1. 1. n = 0.5 tablets
  2. 2. n = 3 tablets
  3. 3. D = 67.5 mg
  4. 4. V = 1 mL
  5. 5. V = 3.4 mL
  6. 6. V = 0.46 mL

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