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
0123455 mL

A solution is 1% w/v. You need 34 mg of the drug. Draw up the volume in the syringe: what volume V is that?

1% w/v34 mg
V = mL
2.Easy
0123455 mL

A solution is 1% w/v. You need 22 mg of the drug. Draw up the volume in the syringe: what volume V is that?

1% w/v22 mg
V = mL
3.Medium
024681010 mL

A solution has a ratio strength of 1:10 000. You need 0.54 mg. Draw up the volume in the 10 mL syringe: what volume V is that?

1:10 0000.54 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 0.33 mg. Draw up the volume in the 1 mL syringe: what volume V is that?

1:10000.33 mg
V = mL
5.Hard
23%sodium chloride+3%sodium chloride? mL5%1500 mL

Practice exercise (made-up values, not clinical guidance). You must prepare 1500 mL of 5% sodium chloride by mixing 23% and 3% sodium chloride. How many mL V of the 3% solution do you need? Round to the nearest whole mL.

23%3%5%1500 mL
V = mL
6.Hard
70%dextrose+10%dextrose? mL40%300 mL

Practice exercise (made-up values, not clinical guidance). You must prepare 300 mL of 40% dextrose by mixing 70% and 10% dextrose. How many mL V of the 10% solution do you need? Round to the nearest whole mL.

70%10%40%300 mL
V = mL

Answer key

  1. 1. V = 3.4 mL
  2. 2. V = 2.2 mL
  3. 3. V = 5.4 mL
  4. 4. V = 0.33 mL
  5. 5. V = 1350 mL
  6. 6. V = 150 mL

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