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
? × 1 mg

The prescription is 500 micrograms (mcg) of a drug. The tablets contain 1 mg each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

500 mcg1 mg/tablet
n = tablets
2.Easy
0123455 mL

The prescription is 78 mg. The stock solution contains 20 mg in 1 mL. Draw up the dose in the syringe: what volume V do you give?

78 mg20 mg/1 mL
V = mL
3.Medium
1 g+ 9.6 mLV = ? mL

A vial contains 1 g of powder. The label says: add 9.6 mL of water for injection to give a total volume of 10 mL. The prescription is 300 mg. What volume V of the reconstituted solution do you give?

1 g+ 9.6 mL → 10 mL300 mg
V = mL
4.Medium
024681010 mL

A child weighing 37 kg is prescribed 4 mg/kg of a drug. The stock solution contains 20 mg/mL. Draw up the dose: what volume V do you give?

37 kg4 mg/kg20 mg/mL
V = mL
5.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 125 micrograms. The ampoule contains 0.5 mg/mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

125 mcg0.5 mg/mL
V = mL
6.Hard
50k units500 mL? mL/h1000 units/h

An infusion contains 50000 units of a drug in 500 mL. The prescription is 1000 units per hour. At what rate R do you set the pump, in mL/h?

50000 units/500 mL1000 units/h
R = mL/h

Answer key

  1. 1. n = 0.5 tablets
  2. 2. V = 3.9 mL
  3. 3. V = 3 mL
  4. 4. V = 7.4 mL
  5. 5. V = 0.25 mL
  6. 6. R = 10 mL/h

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