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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1.Easy
dextrose10% w/v250 mL? g

Practice exercise (made-up values, not clinical guidance). How many g of dextrose are in 250 mL of 10% w/v solution? Find m.

10% w/v250 mL
m = g
2.Easy
0123455 mL

A solution is 1% w/v. You need 11 mg of the drug. Draw up the volume in the syringe: what volume V is that?

1% w/v11 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 0.84 mg. Draw up the volume in the 1 mL syringe: what volume V is that?

1:10000.84 mg
V = mL
4.Medium
024681010 mL

A solution has a ratio strength of 1:10 000. You need 0.66 mg. Draw up the volume in the 10 mL syringe: what volume V is that?

1:10 0000.66 mg
V = mL
5.Hard
50%dextrose+10%dextrose? mL20%500 mL

Practice exercise (made-up values, not clinical guidance). You must prepare 500 mL of 20% dextrose by mixing 50% and 10% dextrose. How many mL V of the 10% solution do you need? Round to the nearest whole mL.

50%10%20%500 mL
V = mL
6.Hard
30%hydrogen peroxide+0%water? mL10%900 mL

Practice exercise (made-up values, not clinical guidance). You must prepare 900 mL of 10% hydrogen peroxide from a 30% stock and purified water. How many mL V of water do you need? Round to the nearest whole mL.

30%0%10%900 mL
V = mL

Answer key

  1. 1. m = 25 g
  2. 2. V = 1.1 mL
  3. 3. V = 0.84 mL
  4. 4. V = 6.6 mL
  5. 5. V = 375 mL
  6. 6. V = 600 mL

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