Calculations Quizz

 To divide by 100 you move the decimal point two places to the:

Let or Right

Drug doses are one of the most important aspects of nursing. A calculation error or a decimal point in the wrong place could be fatal for your patient!

 To divide by 100 you move the decimal point two places to the:

Left

Right

Convert 0.075g to mg

7.5mg

75mg

750mg

What is 0.007L in mL?

0.7ml

7ml

70ml

What is 6.326 correct to two decimal places?

6.3

6.33

6.326

Multiply 8.3 × 0.07

0.058

0.581

5.81

A patient is ordered 0.06grams of Codeine. Your stock is in 30mg tablets. How many tablets should be given?

0.5

1

2

2

If you have 60mg, 80mg, 120mg and 160mg tablets, a required dose of 280mg and you can only give whole tablets. What is the least amount of tablets you can give?

2

3

4

You have a syrup of penicillin of 250mg/5ml. How many milligrams of penicillin are in 20ml of syrup?

750

1000

1250

2000

What volume of phenytoin 20mg/ 5ml do you give if 30mg has been ordered?

7.5mL

75mL

8mL

80mL

You have Heparin at a strength of 5000 units/5mL. What volume do you need to give 900 units?

0.9mL

9.0mL

5.5mL

55mL

A patient will receive 750ml of normal saline and the fluid is delivered at 25mL/hour. How long will the fluid last?

25 hours

30 hours

33 hours

You have 80ml of fluid containing 75mg of gentamicin and an infusion time of 35 mins. What’s the required pump setting in mL/hour?

136mL/hour

137mL/hour

171mL/hour

172mL/hour

You have 80ml of fluid containing 75mg of gentamicin and an infusion time of 35 mins. What’s the required pump setting in mL/hour?

136mL/hour

137mL/hour

171mL/hour

172mL/hour

 

If a patient needs a unit of packed cells over three hours, a unit contains 250mL and the I.V. set delivers 15 drops/mL. What drip rate in drops per minute is needed?

21

22

23

24

What size of single dose of Amoxicillin would be needed for a child weighing 27kg when they are prescribed 40mg/kg/day, 4 doses per day?

250mg/dose

260mg/dose

270mg/dose

275mg/dose