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
? × 500 mg

A patient is prescribed 500 mg of a drug 3 times a day for 5 days. The tablets contain 500 mg each. How many tablets N are needed for the whole course?

500 mg3× per day5 days500 mg/tablet
N = tablets
2.Easy
? × 62.5 mcg

The prescription is 0.125 mg of a drug. The tablets contain 62.5 micrograms (mcg) each. How many tablets n do you give?

0.125 mg62.5 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
1 g+ 4.2 mLV = ? mL

A vial contains 1 g of powder. The label says: add 4.2 mL of water for injection to give a total volume of 5 mL. The prescription is 120 mg. What volume V of the reconstituted solution do you give?

1 g+ 4.2 mL → 5 mL120 mg
V = mL
5.Hard
25k units1000 mL? mL/h2000 units/h

An infusion contains 25000 units of a drug in 1000 mL. The prescription is 2000 units per hour. At what rate R do you set the pump, in mL/h?

25000 units/1000 mL2000 units/h
R = mL/h
6.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 0.92 mg. The ampoule contains 4000 micrograms per mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

0.92 mg4000 mcg/mL
V = mL

Answer key

  1. 1. N = 15 tablets
  2. 2. n = 2 tablets
  3. 3. D = 270 mg
  4. 4. V = 0.6 mL
  5. 5. R = 80 mL/h
  6. 6. V = 0.23 mL

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