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 115 mg. The stock solution contains 250 mg in 5 mL. Draw up the dose in the syringe: what volume V do you give?

115 mg250 mg/5 mL
V = mL
2.Easy
0123455 mL

The prescription is 120 mg. The stock solution contains 100 mg in 2 mL. Draw up the dose in the syringe: what volume V do you give?

120 mg100 mg/2 mL
V = mL
3.Medium
2 g+ 9.2 mLV = ? mL

A vial contains 2 g of powder. The label says: add 9.2 mL of water for injection to give a total volume of 10 mL. The prescription is 480 mg. What volume V of the reconstituted solution do you give?

2 g+ 9.2 mL → 10 mL480 mg
V = mL
4.Medium
024681010 mL

A child weighing 22 kg is prescribed 5 mg/kg of a drug. The stock solution contains 25 mg/mL. Draw up the dose: what volume V do you give?

22 kg5 mg/kg25 mg/mL
V = mL
5.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 3640 micrograms. The ampoule contains 4 mg/mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

3640 mcg4 mg/mL
V = mL
6.Hard
50%stockwater = ? mL

You must prepare 250 mL of a 2% (w/v) solution from a 50% (w/v) stock solution. How much water W must be added to the stock?

C₁ = 50%C₂ = 2%V₂ = 250 mL
W = mL

Answer key

  1. 1. V = 2.3 mL
  2. 2. V = 2.4 mL
  3. 3. V = 2.4 mL
  4. 4. V = 4.4 mL
  5. 5. V = 0.91 mL
  6. 6. W = 240 mL

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