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

130 mg50 mg/1 mL
V = mL
2.Easy
? × 125 mcg

The prescription is 0.125 mg of a drug. The tablets contain 125 micrograms (mcg) each. How many tablets n do you give?

0.125 mg125 mcg/tablet
n = tablets
3.Medium
20%w/vV = ? mL

A dose of 1000 mg is needed from a 20% (w/v) solution. What volume V contains this dose?

1000 mg20% w/v
V = mL
4.Medium
500 mg+ 1.8 mLV = ? mL

A vial contains 500 mg of powder. The label says: add 1.8 mL of water for injection to give a total volume of 2 mL. The prescription is 150 mg. What volume V of the reconstituted solution do you give?

500 mg+ 1.8 mL → 2 mL150 mg
V = mL
5.Hard
25%stockV₁ = ? mL

You must prepare 250 mL of a 2% (w/v) solution from a 25% (w/v) stock solution. What volume of stock V₁ do you need?

C₁ = 25%C₂ = 2%V₂ = 250 mL
V₁ = mL
6.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 0.25 mg. The ampoule contains 500 micrograms per mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

0.25 mg500 mcg/mL
V = mL

Answer key

  1. 1. V = 2.6 mL
  2. 2. n = 1 tablets
  3. 3. V = 5 mL
  4. 4. V = 0.6 mL
  5. 5. V₁ = 20 mL
  6. 6. V = 0.5 mL

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