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
glycerin200 g1000 mL? % w/v

Practice exercise (made-up values, not clinical guidance). 200 g of glycerin is dissolved in water to a total volume of 1000 mL. What is the percentage strength p (% w/v)?

200 g1000 mL
p = %
2.Easy
dextrose5% w/v250 mL? g

Practice exercise (made-up values, not clinical guidance). How many g of dextrose are in 250 mL of 5% w/v solution? Find m.

5% w/v250 mL
m = g
3.Medium
00.10.20.30.40.50.60.70.80.911 mL

A solution has a ratio strength of 1:1000. You need 0.63 mg. Draw up the volume in the 1 mL syringe: what volume V is that?

1:10000.63 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 0.16 mg. Draw up the volume in the 1 mL syringe: what volume V is that?

1:10000.16 mg
V = mL
5.Hard
50%dextrose? mL+10%dextrose20%300 mL

Practice exercise (made-up values, not clinical guidance). You must prepare 300 mL of 20% 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%20%300 mL
V = mL
6.Hard
50%dextrose? mL+10%dextrose30%400 mL

Practice exercise (made-up values, not clinical guidance). You must prepare 400 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%400 mL
V = mL

Answer key

  1. 1. p = 20 %
  2. 2. m = 12.5 g
  3. 3. V = 0.63 mL
  4. 4. V = 0.16 mL
  5. 5. V = 75 mL
  6. 6. V = 200 mL

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