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
? × 50 mg

A patient is prescribed 50 mg of a drug 3 times a day for 5 days. The tablets contain 50 mg each. How many tablets N are needed for the whole course?

50 mg3× per day5 days50 mg/tablet
N = tablets
2.Easy
0123455 mL

The prescription is 10 mg. The stock solution contains 20 mg in 1 mL. Draw up the dose in the syringe: what volume V do you give?

10 mg20 mg/1 mL
V = mL
3.Medium
60 kg7.5 mg/kg/day4× per dayD = ? mg

A patient weighs 60 kg. The prescribed dose is 7.5 mg/kg per day, given in 4 equal doses. How many milligrams D are given per dose?

60 kg7.5 mg/kg/day4× per day
D = mg
4.Medium
024681010 mL

A child weighing 24 kg is prescribed 7.5 mg/kg of a drug. The stock solution contains 50 mg/mL. Draw up the dose: what volume V do you give?

24 kg7.5 mg/kg50 mg/mL
V = mL
5.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 640 units of a drug that comes as 1000 units/mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

640 units1000 units/mL
V = mL
6.Hard
100 mg/1 mLV = ? mL

A patient weighs 187 lb. The prescription is 15 mg/kg as a single dose, and the stock contains 100 mg in 1 mL. Using 1 kg = 2.2 lb, what volume V do you give? Round to one decimal place.

187 lb15 mg/kg100 mg/1 mL1 kg = 2.2 lb
V = mL

Answer key

  1. 1. N = 15 tablets
  2. 2. V = 0.5 mL
  3. 3. D = 112.5 mg
  4. 4. V = 3.6 mL
  5. 5. V = 0.64 mL
  6. 6. V = 12.8 mL

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