Calculations-6

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The Pharmacy Technician Workbook & Certification Review Ch 6

Convert to decimal: 5/8

0.625

Convert to decimal: 0.2%

0.002

Convert to decimal: 1/4

0.25

Convert to decimal: 2/3

0.66

Convert to decimal: 12%

0.12

Convert to decimal: 42.5%

0.425

Convert to decimal: 3.2%

0.032

Convert to percent: 0.7

70%

Convert to percent: 75/100

75%

Convert to percent: 1.5

150%

Convert to percent: 1/8

12.5%

Convert to percent: 0.075

7.5%

Convert to percent: 4/5

80%

Convert to percent: 0.025

2.5%

Write in Roman Numeral: 67

LXVII

Write in Roman Numeral: 29

XXIX

Write in Roman Numeral: 71

LXXI

Write in Roman Numeral: 108

CVIII

Write in Roman Numeral: 8

VIII

Write in Roman Numeral: 98

XCVIII

Write in Roman Numeral: *

IX

You have a prescription that calls for 1cap po qid x 10 days. How many capsules are needed?

40

You have a prescription that calls for 1 cap po tid x 14 days. How many capsules are needed?

42

If a compounding order calls for Flagyl 125mg bid x 7 days and only 500 mg tablets are available, how many tablets will it take to fill the order?

3.5

How much talc is needed for an order of 120 gm of the following compound:
Nupercainal ointment 4%, zinc oxide 20%, talc 2%?

2400mg

A prescription calls for 200mg of a drug that you have in 10mg/15ml concentration. How many ml of the liquid do you need?

10mg/15ml=200mg/x
10mg(x)=15ml(200mg)
x=300ml

Write in arabic numbers: XIX

19

Write in arabic numbers: CIII

103

Write in arabic numbers: CMM

1900

Write in arabic numbers: iiss

2.5

Write in arabic numbers: XXX

30

Write in arabic numbers: LIV

59

An IV requires the addition of 40 mEq potassium chloride (KCL). You have a vial of KCL at a concentration of 20mEq per 10ml. How many ml should be added?

20mg/10ml=40mg/x
20mg(x)=10ml(40mg)
x=20ml

If 200 grams of dextrose is ordered using a 50% dextrose solution, how many ml are needed?

50%=50g/100ml
50g/100ml=200g/x
50g(x)=100ml(200g)
x=400ml

A prescription calls for 0.36mg of a drug that you have in 50mcg/ml concentration. How many ml do you need?

0.36mg=360mcg
50mcg/1ml=360mcg/x
50mcg(x)=360mcg(1ml)
x=7.2ml

The infusion rate of an IV is 300ml over 5 hours. What is the ml/minute rate?

300ml/5h=60min/x
300ml(x)=5h(60min)
x=1ml/min

The infusion rate of an IV is 1000ml over 12 hours. What is the rate in ml per minute?

x=1.4

An IV calls for administration of 1.5ml/minute of a solution for four hours. How much solution will be needed?

1.5ml/min=x/240min
1.5ml(240min)=x(1min)
x=360ml

If a physician orders 25% dextrose 1000ml and all you have is 70% dextrose 1000ml, how much 70% dextrose and how much sterile water will be used?

70%-25%=45 parts water
25%-0%=25 parts 70% dextrose
45+25=70 parts total
25/70 x 1000ml= 357ml 70% dextrose
45/70 x 1000ml=643ml sterile water

If a physician orders 20% dextrose 1000ml and all you have is 70% dextrose 1000ml, how much 70% dextrose and how much sterile water will be used?

70%-20%=50 parts water
20%-0%=20 parts 70% dextrose
50+20=70 parts total
20/70 x 1000ml=286ml 70% dextrose
50/70 x 1000ml=714ml sterile water

If a physician orders 25% dextrose 500ml and you have 50% dextrose 1000ml, how much 50% dextrose and how much sterile water do you need?

50%-25%=25 parts water
25%-0%=25 parts 50% dextrose
25+25=50 parts total
25/50 x 500ml=250ml 50% dextrose
25/50 x 500ml= 250ml sterile water

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