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 1000 mg of a drug. The tablets on the ward contain 500 mg each. How many tablets n do you give?

1000 mg500 mg/tablet
n = tablets
2.Easy
0123455 mL

The prescription is 195 mg. The stock solution contains 250 mg in 5 mL. Draw up the dose in the syringe: what volume V do you give?

195 mg250 mg/5 mL
V = mL
3.Medium
90 kg10 mg/kgD = ? mg

A patient weighs 90 kg and is prescribed 10 mg/kg as a single dose. Find the dose D in mg.

90 kg10 mg/kg
D = mg
4.Medium
45 kg25 mg/kg/day2× per dayD = ? mg

A patient weighs 45 kg. The prescribed dose is 25 mg/kg per day, given in 2 equal doses. How many milligrams D are given per dose?

45 kg25 mg/kg/day2× per day
D = mg
5.Hard
50k units500 mL? mL/h1200 units/h

An infusion contains 50000 units of a drug in 500 mL. The prescription is 1200 units per hour. At what rate R do you set the pump, in mL/h?

50000 units/500 mL1200 units/h
R = mL/h
6.Hard
10 mg/1 mLV = ? mL

A patient weighs 96.8 lb. The prescription is 2 mg/kg as a single dose, and the stock contains 10 mg in 1 mL. Using 1 kg = 2.2 lb, what volume V do you give?

96.8 lb2 mg/kg10 mg/1 mL1 kg = 2.2 lb
V = mL

Answer key

  1. 1. n = 2 tablets
  2. 2. V = 3.9 mL
  3. 3. D = 900 mg
  4. 4. D = 562.5 mg
  5. 5. R = 12 mL/h
  6. 6. V = 8.8 mL

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