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
250 mg/5 mLV = ? mL

The prescription is 187.5 mg. The stock solution contains 250 mg in 5 mL. What volume V do you draw up?

187.5 mg250 mg/5 mL
V = mL
2.Easy
? × 0.25 mg

The prescription is 125 micrograms (mcg) of a drug. The tablets contain 0.25 mg each. How many tablets n do you give? The tablets are scored, so they can be broken in half.

125 mcg0.25 mg/tablet
n = tablets
3.Medium
107 kgBSA = 2.04 m²75 mg/m²D = ? mg

A patient weighing 107 kg has a body surface area of 2.04 m². The prescription is 75 mg/m². Find the dose D in mg.

107 kgBSA = 2.04 m²75 mg/m²
D = mg
4.Medium
2%20 mLm = ? mg

How many milligrams of drug m are in 20 mL of a 2% (w/v) solution?

2% w/v20 mL
m = mg
5.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 2900 units of a drug that comes as 10000 units/mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

2900 units10000 units/mL
V = mL
6.Hard
40k units250 mL? mL/h1250 units/h

An infusion contains 40000 units of a drug in 250 mL. The prescription is 1250 units per hour. At what rate R do you set the pump, in mL/h?

40000 units/250 mL1250 units/h
R = mL/h

Answer key

  1. 1. V = 3.75 mL
  2. 2. n = 0.5 tablets
  3. 3. D = 153 mg
  4. 4. m = 400 mg
  5. 5. V = 0.29 mL
  6. 6. R = 7.813 mL/h

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