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
100 mcg/1 mLV = ? mL

The prescription is 0.1 mg by injection. The ampoule is labelled 100 micrograms per mL. What volume V do you draw up?

0.1 mg100 mcg/mL
V = mL
2.Easy
? × 25 mg

A patient is prescribed 25 mg of a drug 3 times a day for 5 days. The tablets contain 25 mg each. How many tablets N are needed for the whole course?

25 mg3× per day5 days25 mg/tablet
N = tablets
3.Medium
2%50 mLm = ? mg

How many milligrams of drug m are in 50 mL of a 2% (w/v) solution?

2% w/v50 mL
m = mg
4.Medium
1:10 000ampouleV = ? mL

A prefilled syringe of epinephrine (adrenaline) is labelled 1:10 000 (0.1 mg/mL). The prescription is 1 mg IV in cardiac arrest. What volume V do you give?

1:10 0001 mg
V = mL
5.Hard
125 mg/5 mLV = ? mL

A patient weighs 83.6 lb. The prescription is 0.5 mg/kg as a single dose, and the stock contains 125 mg in 5 mL. Using 1 kg = 2.2 lb, what volume V do you give?

83.6 lb0.5 mg/kg125 mg/5 mL1 kg = 2.2 lb
V = mL
6.Hard
40k units1000 mL? mL/h1000 units/h

An infusion contains 40000 units of a drug in 1000 mL. The prescription is 1000 units per hour. At what rate R do you set the pump, in mL/h?

40000 units/1000 mL1000 units/h
R = mL/h

Answer key

  1. 1. V = 1 mL
  2. 2. N = 15 tablets
  3. 3. m = 1000 mg
  4. 4. V = 10 mL
  5. 5. V = 0.76 mL
  6. 6. R = 25 mL/h

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