CheckPoint: Mathematical Functions
Accuracy and precision in the calculation of doses, dosages, andrates of infusion of intravenous solutions are often based onpercents, ratios, and proportions. The exercises for thisCheckPoint provide opportunities to perform various mathematicalfunctions pharmacy technicians must master.
Assume the role of a pharmacy technician. A pharmacist gives you aphysician’s order sheet, a prescription, and asks you to prepare a2% solution of sodium chloride (NaCl). You check the stock in thepharmacy but discover you have only a 3% solution of NaCl. Hint: 2gNaCl:100mL of solution::3g NaCL:x mL of 3% solution.
 Show all your calculations in a Microsoft® Word document, usingEquation Editor.
 Complete the following exercises. Refer to p. 22 for workedexamples.
1. Solve the equation for x to determine how many mL of 3% solutionyou need.
2. Convert 3% to a decimal.
3. Convert 2% to a fraction.
4. Percents are often used to show the strength of solutions. Whichsolution is stronger, the 2% or the 3%?
5. What does 3% of sodium chloride mean?
6. Referring to the proportion regarding NaCl in the scenario, showthe product of the means equals the product of the extremes.
7. Convert 12% to a fraction.
8. What percent of 15 ounces is 5 ounces?
9. Convert 1/5 to a percent.
10. Convert 33% to a decimal.
 Complete the following exercises:
1. Critical Thinking, p. 25: Problem 3
2. Explain whether or not 20:25 = 4:5 is a true portion. Refer toExample 2 on p. 22.
3. Stop and Review, p. 22: Problems 1a, 1c, 1f, 1h, & 1l
 Post your work and answers to all problems as an attachment.

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