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
? × 125 mg

A patient is prescribed 187.5 mg of a drug. The tablets on the ward contain 125 mg each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

187.5 mg125 mg/tablet
n = tablets
2.Easy
? × 100 mg

A patient is prescribed 200 mg of a drug 4 times a day for 7 days. The tablets contain 100 mg each. How many tablets N are needed for the whole course?

200 mg4× per day7 days100 mg/tablet
N = tablets
3.Medium
18 kgBSA = 0.89 m²20 mg/m²D = ? mg

A patient weighing 18 kg has a body surface area of 0.89 m². The prescription is 20 mg/m². Find the dose D in mg.

18 kgBSA = 0.89 m²20 mg/m²
D = mg
4.Medium
70 kg10 mg/kgD = ? mg

A patient weighs 70 kg and is prescribed 10 mg/kg as a single dose. Find the dose D in mg.

70 kg10 mg/kg
D = mg
5.Hard
250 mg/5 mLV = ? mL

A child weighing 16 kg is prescribed 10 mg/kg per dose of an oral suspension that contains 250 mg in 5 mL. What volume V do you give?

16 kg10 mg/kg250 mg/5 mL
V = mL
6.Hard
200 mg/5 mLV = ? mL

A child weighing 10 kg is prescribed 5 mg/kg per dose of an oral suspension that contains 200 mg in 5 mL. What volume V do you give? Round to one decimal place.

10 kg5 mg/kg200 mg/5 mL
V = mL

Answer key

  1. 1. n = 1.5 tablets
  2. 2. N = 56 tablets
  3. 3. D = 17.8 mg
  4. 4. D = 700 mg
  5. 5. V = 3.2 mL
  6. 6. V = 1.3 mL

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