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
? × 100 mg

A patient is prescribed 200 mg of a drug 3 times a day for 10 days. The tablets contain 100 mg each. How many tablets N are needed for the whole course?

200 mg3× per day10 days100 mg/tablet
N = tablets
2.Easy
? × 0.25 mg

The prescription is 375 micrograms (mcg) of a drug. The tablets contain 0.25 mg each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

375 mcg0.25 mg/tablet
n = tablets
3.Medium
70 kg5 mg/kgD = ? mg

A patient weighs 70 kg and is prescribed 5 mg/kg as a single dose. Find the dose D in mg.

70 kg5 mg/kg
D = mg
4.Medium
30 kg25 mg/kg/day2× per dayD = ? mg

A patient weighs 30 kg. The prescribed dose is 25 mg/kg per day, given in 2 equal doses. How many milligrams D are given per dose?

30 kg25 mg/kg/day2× per day
D = mg
5.Hard
20k units250 mL? mL/h2000 units/h

An infusion contains 20000 units of a drug in 250 mL. The prescription is 2000 units per hour. At what rate R do you set the pump, in mL/h?

20000 units/250 mL2000 units/h
R = mL/h
6.Hard
120 mg/5 mLV = ? mL

A child weighing 8 kg is prescribed 12.5 mg/kg per dose of an oral suspension that contains 120 mg in 5 mL. What volume V do you give? Round to one decimal place.

8 kg12.5 mg/kg120 mg/5 mL
V = mL

Answer key

  1. 1. N = 60 tablets
  2. 2. n = 1.5 tablets
  3. 3. D = 350 mg
  4. 4. D = 375 mg
  5. 5. R = 25 mL/h
  6. 6. V = 4.2 mL

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