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/5 mLV = ? mL

The prescription is 50 mg. The stock solution contains 100 mg in 5 mL. What volume V do you draw up?

50 mg100 mg/5 mL
V = mL
2.Easy
0123455 mL

The prescription is 184 mg. The stock solution contains 200 mg in 5 mL. Draw up the dose in the syringe: what volume V do you give?

184 mg200 mg/5 mL
V = mL
3.Medium
18 kg25 mg/kg/day4× per dayD = ? mg

A patient weighs 18 kg. The prescribed dose is 25 mg/kg per day, given in 4 equal doses. How many milligrams D are given per dose?

18 kg25 mg/kg/day4× per day
D = mg
4.Medium
18 kg30 mg/kgD = ? mg

A patient weighs 18 kg and is prescribed 30 mg/kg as a single dose. Find the dose D in mg.

18 kg30 mg/kg
D = mg
5.Hard
25%stockwater = ? mL

You must prepare 500 mL of a 0.5% (w/v) solution from a 25% (w/v) stock solution. How much water W must be added to the stock?

C₁ = 25%C₂ = 0.5%V₂ = 500 mL
W = mL
6.Hard
25%stockwater = ? mL

You must prepare 250 mL of a 5% (w/v) solution from a 25% (w/v) stock solution. How much water W must be added to the stock?

C₁ = 25%C₂ = 5%V₂ = 250 mL
W = mL

Answer key

  1. 1. V = 2.5 mL
  2. 2. V = 4.6 mL
  3. 3. D = 112.5 mg
  4. 4. D = 540 mg
  5. 5. W = 490 mL
  6. 6. W = 200 mL

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