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
? × 10 mg

A patient is prescribed 15 mg of a drug. The tablets on the ward contain 10 mg each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

15 mg10 mg/tablet
n = tablets
2.Easy
? × 50 mcg

The prescription is 0.075 mg of a drug. The tablets contain 50 micrograms (mcg) each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

0.075 mg50 mcg/tablet
n = tablets
3.Medium
18 kg15 mg/kgD = ? mg

A patient weighs 18 kg and is prescribed 15 mg/kg as a single dose. Find the dose D in mg.

18 kg15 mg/kg
D = mg
4.Medium
500 mg+ 4.6 mLV = ? mL

A vial contains 500 mg of powder. The label says: add 4.6 mL of water for injection to give a total volume of 5 mL. The prescription is 40 mg. What volume V of the reconstituted solution do you give?

500 mg+ 4.6 mL → 5 mL40 mg
V = mL
5.Hard
100 mg/5 mLV = ? mL

A child weighing 10 kg is prescribed 15 mg/kg per dose of an oral suspension that contains 100 mg in 5 mL. What volume V do you give?

10 kg15 mg/kg100 mg/5 mL
V = mL
6.Hard
100 mg/1 mLV = ? mL

A patient weighs 112.2 lb. The prescription is 2 mg/kg as a single dose, and the stock contains 100 mg in 1 mL. Using 1 kg = 2.2 lb, what volume V do you give? Round to one decimal place.

112.2 lb2 mg/kg100 mg/1 mL1 kg = 2.2 lb
V = mL

Answer key

  1. 1. n = 1.5 tablets
  2. 2. n = 1.5 tablets
  3. 3. D = 270 mg
  4. 4. V = 0.4 mL
  5. 5. V = 7.5 mL
  6. 6. V = 1 mL

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