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
? × 20 mg

A patient is prescribed 40 mg of a drug 3 times a day for 5 days. The tablets contain 20 mg each. How many tablets N are needed for the whole course?

40 mg3× per day5 days20 mg/tablet
N = tablets
2.Easy
? × 10 mg

A patient is prescribed 30 mg of a drug. The tablets on the ward contain 10 mg each. How many tablets n do you give?

30 mg10 mg/tablet
n = tablets
3.Medium
124 kgBSA = 2.19 m²135 mg/m²D = ? mg

A patient weighing 124 kg has a body surface area of 2.19 m². The prescription is 135 mg/m². Find the dose D in mg.

124 kgBSA = 2.19 m²135 mg/m²
D = mg
4.Medium
15 kg2 mg/kg/day4× per dayD = ? mg

A patient weighs 15 kg. The prescribed dose is 2 mg/kg per day, given in 4 equal doses. How many milligrams D are given per dose?

15 kg2 mg/kg/day4× per day
D = mg
5.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 410 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?

410 units1000 units/mL
V = mL
6.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 240 micrograms. The ampoule contains 0.5 mg/mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

240 mcg0.5 mg/mL
V = mL

Answer key

  1. 1. N = 30 tablets
  2. 2. n = 3 tablets
  3. 3. D = 295.6 mg
  4. 4. D = 7.5 mg
  5. 5. V = 0.41 mL
  6. 6. V = 0.48 mL

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