Practice Questions in Essential Calculations for Veterinary Nurses and Technicians

PRACTICE QUESTIONS Chapter 1: Review of Basic Math Fractions 1. What is the lowest term for the fraction 5 30 2. Reduce this fraction to its lowest term 51 87 3. Reduce this fraction to its lowest term 60 480 4. Find the lowest common denominator. 2 5 3 4 7 8 5 12 5. Find the lowest common denominator. 2 7 5 6 7 16 9 32 6. Find the lowest common denominator. 1 3 2 5 3 7 4 9 Addition and Subtraction of Fractions 7. 1 3 + 4 9 8. 7 10 + 9 14 9. 1 4 + 5 8 + 12 32 10. 1 3 - 1 12

11. 7 8 - 3 7 12. 7 9 - 4 8 Multiplying and Dividing Fractions 13. 3 4 x 1 3 14. 24 6 x 1 5 15. 3 5 6 x 10 11 16. 3 2 5 x 12 4 17. 1 6 ÷ 1 2 18. 3 8 ÷ 1 2 19. 5 1 6 ÷ 2 3 8 20. 3 5 6 ÷ 4 1 7 Chapter 2: Methods of Solving for the Unknown Ratio and Proportion Determine the value of x. 1. 80𝑚𝑚𝑚𝑚 7𝑚𝑚𝑚𝑚 = 307 . 5𝑚𝑚𝑚𝑚 𝑥𝑥 2. 18𝑚𝑚𝑚𝑚 8𝑡𝑡𝑡𝑡𝑡𝑡𝑡𝑡 = 50 . 4𝑚𝑚𝑚𝑚 𝑥𝑥 3. 45𝑚𝑚𝑚𝑚 3 . 6𝑚𝑚𝑚𝑚 = 135𝑚𝑚𝑚𝑚 𝑥𝑥

4. 780 𝑈𝑈 7 . 8𝑚𝑚𝑚𝑚 = 42 𝑈𝑈 𝑥𝑥 5. 11 . 4𝑚𝑚𝑚𝑚 2 . 7𝑚𝑚𝑚𝑚 = 8 . 8𝑚𝑚𝑚𝑚 𝑥𝑥 Dimensional Analysis 1. Ralph, a 7kg Border Cockapoo requires oral medication at a dose of 10mg/kg. The oral liquid contains 20mg/mL. What dose, in mL, would you give to Ralph? 2. Bruce, a 35kg Rottweiler requires worming treatment. The tablets are available in a strength of 50mg and the dose rate is 5mg per kg. How many tablets would you dispense? 3. Ruby is a 12kg Cocker Spaniel and requires an injection. The drug is available at 20mg/mL and the dose is 4mg/kg. How much do you inject? 4. A 3.5kg cat, socks, requires oral preparation. The preparation is available in a 10% solution. The dosage is 15mg/kg daily. How much will Betsy require for 7 days. 5. Maisie is a 4.5kg cat that requires tablets at a dose of 7mg/kg/day, the tablets are available in 5mg strength, how many tablets does Maisie need a day? 6. Ben, a 19kg Border Collie needs medication at a dose rate of 50mg/kg. The medication is available as a 25% solution. How much does Ben require for a single dose? 7. A 3kg Cat, Oscar needs an injection of a drug which has a strength of 10mg/mL and the dose rate is 5mg/kg, how much do you inject Oscar with? 8. You have a 50% solution of medication and Scamp a 13kg cross breed requires 25mg/kg twice daily, how many mL does Scamp need per day? 9. A 25kg dog requires oral medication which that is available in a strength of 50mg/mL, the dose rate for the drug is 4mg/kg. How much should you give?

10. A 22kg dog requires an injection that come in a strength of 50mg/mL, the dose required is 5mg per kg, how much should be injected? Chapter 5: Calculating Medication Dosages Oral Medication Animal weight (kg) x Dose rate = Dose required Dose x number of times per day = daily dose Daily dose x No of days = total dose required Total dose ÷ concentration = Number of tablets/mL required 1. A 4 kg cat requires 25 mg tablets with a dose rate of 15 mg/kg for 5 days. How many tablets does it need? 2. A 17 kg dog requires 15 mg tablets at a dose of 10 mg/kg for 7 days. How many tablets does it require? 3. A 3.5kg cat requires oral suspension with a strength of 3%. The dose rate is 15mg/kg twice daily, how much does the cat need for 5 days? 4. A 20 kg dog requires an oral syrup medication. The dose is 50 mg /kg per os, t.i.d. for 5 days. The syrup contains 30 mg/mL. How much syrup do you need to dispense? 5. A 15 kg dog requires 150mg tablets at a dose of 20mg/kg b.i.d. for 7 days. How many tablets are needed? 6. A 42kg dog requires 5mg/kg of an oral suspension which is available in a strength of 50mg per mL, it needs a 7-day course, how much medication would you dispense? 7. A 16.5 kg dog requires a 10-day course of antibiotics. The dose is 25mg/kg/24hrs and the tablets are available in 50mg, 250mg and 500mg strengths. Which tablets are most appropriate and how many would you supply? 8. A 26 kg dog requires 100 mg tablets at a dose of 20 mg/kg tid for 7 days. How many tablets does it require? 9. A 3kg cat requires tablets with a strength of 2mg, the dose required for the cat is 1mg/kg twice daily for 5 days. How many tablets will the cat require for the course?

10. A 12 kg dog requires 30mg tablets. The dose rate is 5 mg/kg q.8 h. How many tablets are required per dose and how many are dispensed for 7 days? 11. A 6.5 kg cat needs medication in a solution format for 14 days. The dose rate for the solution is 7 mg/kg and the suspension is a 2% solution. How many mL do you need to dispense? 12. The dose rate for a medication is 2mg/kg and the tablets are available in a strength of 10mg. Your two patients require these tablets Ben weighing 12kg and Bob weighing 16.5kg. How many tablets does each dog require? 13. A large cat weighs 6.5kg and requires medication at a dose of 3mg/kg and the tablets are available in 20mg. How many tablets does your patient require? 14. A 39kg Dobermann requires 50mg tablets that have a dose of 2.5mg/kg once daily for 5 days. How many tablets does the dog need in total? 15. A 13kg dog needs a 5% oral solution at a dose of 25mg/kg twice daily for 7 days, how much oral solution is required? Parenteral Medication – Injections 16. A 10.5kg dog requires an injection from a 3.5% solution. The dose rate for this drug is 20mg/kg. How much of the solution does the dog need? 17. A 29 kg Labrador requires an injection of a drug which contains 225 mg/mL. The recommended dose rate for the drug is 50 mg/kg. How many mL will the dog require? 18. A 21 kg dog requires needs two × 3mL injections daily of a 2.5% solution of a drug. Calculate the dose rate in mg/kg/day. 19. A dog weighing 13.5 kg requires an injection of drug which contains 60mg per mL. The dose rate for the drug is 20mg/kg. Calculate the volume required. 20. A dog weighing 2.7 kg needs an injection of a 2% solution. The dose rate for the medication is 15mg/kg. How many mL does the dog require? 21. 2mL of a 0.4% solution is administered by injection to a 1.2kg rabbit. How many mg have been given?