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
0123455 mL

The prescription is 235 mg. The stock solution contains 50 mg in 1 mL. Draw up the dose in the syringe: what volume V do you give?

235 mg50 mg/1 mL
V = mL
2.Easy
0123455 mL

The prescription is 135 mg. The stock solution contains 50 mg in 1 mL. Draw up the dose in the syringe: what volume V do you give?

135 mg50 mg/1 mL
V = mL
3.Medium
0.5%2 mLm = ? mg

How many milligrams of drug m are in 2 mL of a 0.5% (w/v) solution?

0.5% w/v2 mL
m = mg
4.Medium
22 kg20 mg/kg/day4× per dayD = ? mg

A patient weighs 22 kg. The prescribed dose is 20 mg/kg per day, given in 4 equal doses. How many milligrams D are given per dose?

22 kg20 mg/kg/day4× per day
D = mg
5.Hard
50k units1000 mL? mL/h1250 units/h

An infusion contains 50000 units of a drug in 1000 mL. The prescription is 1250 units per hour. At what rate R do you set the pump, in mL/h?

50000 units/1000 mL1250 units/h
R = mL/h
6.Hard
10%stockV₁ = ? mL

You must prepare 500 mL of a 2.5% (w/v) solution from a 10% (w/v) stock solution. What volume of stock V₁ do you need?

C₁ = 10%C₂ = 2.5%V₂ = 500 mL
V₁ = mL

Answer key

  1. 1. V = 4.7 mL
  2. 2. V = 2.7 mL
  3. 3. m = 10 mg
  4. 4. D = 110 mg
  5. 5. R = 25 mL/h
  6. 6. V₁ = 125 mL

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