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
40 mg/1 mLV = ? mL

The prescription is 0.4 g of a drug intravenously. The reconstituted vial contains 40 mg per mL. What volume V do you draw up?

0.4 g40 mg/mL
V = mL
2.Easy
? × 100 mcg

The prescription is 0.2 mg of a drug. The tablets contain 100 micrograms (mcg) each. How many tablets n do you give?

0.2 mg100 mcg/tablet
n = tablets
3.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 400 mg. What volume V of the reconstituted solution do you give?

1 g+ 4.2 mL → 5 mL400 mg
V = mL
4.Medium
2 g+ 7.4 mLV = ? mL

A vial contains 2 g of powder. The label says: add 7.4 mL of water for injection to give a total volume of 8 mL. The prescription is 200 mg. What volume V of the reconstituted solution do you give?

2 g+ 7.4 mL → 8 mL200 mg
V = mL
5.Hard
25%stockwater = ? mL

You must prepare 100 mL of a 2.5% (w/v) solution from a 25% (w/v) stock solution. How much water W must be added to the stock?

C₁ = 25%C₂ = 2.5%V₂ = 100 mL
W = mL
6.Hard
00.10.20.30.40.50.60.70.80.911 mL

The prescription is 1850 units of a drug that comes as 5000 units/mL. Draw up the dose in the 1 mL syringe: what volume V do you give?

1850 units5000 units/mL
V = mL

Answer key

  1. 1. V = 10 mL
  2. 2. n = 2 tablets
  3. 3. V = 2 mL
  4. 4. V = 0.8 mL
  5. 5. W = 90 mL
  6. 6. V = 0.37 mL

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