Pharmacy calculations worksheet with answers

Free printable Pharmacy 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
sodium bicarbonate8.4% w/v10 mL? g

Practice exercise (made-up values, not clinical guidance). How many g of sodium bicarbonate are in 10 mL of 8.4% w/v solution? Find m.

8.4% w/v10 mL
m = g
2.Easy
0123455 mL

A solution is 5% w/v. You need 215 mg of the drug. Draw up the volume in the syringe: what volume V is that?

5% w/v215 mg
V = mL
3.Medium
00.10.20.30.40.50.60.70.80.911 mL

A solution has a ratio strength of 1:1000. You need 0.18 mg. Draw up the volume in the 1 mL syringe: what volume V is that?

1:10000.18 mg
V = mL
4.Medium
00.10.20.30.40.50.60.70.80.911 mL

A solution has a ratio strength of 1:1000. You need 0.94 mg. Draw up the volume in the 1 mL syringe: what volume V is that?

1:10000.94 mg
V = mL
5.Hard
50%dextrose? mL+10%dextrose30%250 mL

Practice exercise (made-up values, not clinical guidance). You must prepare 250 mL of 30% dextrose by mixing 50% and 10% dextrose. How many mL V of the 50% solution do you need? Round to the nearest whole mL.

50%10%30%250 mL
V = mL
6.Hard
0123455 mL

A vial holds 500 mg of powder. You add 9.8 mL of diluent, and the powder adds 0.2 mL of volume. The prescription is 230 mg. Draw up the dose: what volume V do you give?

500 mg9.8 mL + 0.2 mL230 mg
V = mL

Answer key

  1. 1. m = 0.84 g
  2. 2. V = 4.3 mL
  3. 3. V = 0.18 mL
  4. 4. V = 0.94 mL
  5. 5. V = 125 mL
  6. 6. V = 4.6 mL

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