Page 1 of 20 PTCB Practice Exam (Math) PTCB Practice Exam (Math).pdf
PTCB Practice Exam (Math)
20 gtt
First find the total number of minutes: 60 X 4 = 240. Then find mL/min: = 1.67 ml infused in 1
minute. Then multiply this by the drop factor: 1.67 X 12 = 20 drops per minute.
If a physician writes an order for 400 mL of D5W to be infused over a 4-hour time period, and the IV
drop factor is 12 gtt/mL, how many drops per minute should be delivered?
a. 12 gtt
b. 2 gtt
c. 1.67 gtt
d. 20 gtt
$7.05
Gross profit is selling price minus purchase price. For net profit you also need to subtract the dispensing
cost as well.
A drug sells for $29.99 retail and has a wholesale cost of $19.74. The dispensing cost is $3.20. What is
the pharmacy's net profit?
A $10.25
B $29.99
Page 1 PTCB Practice Exam (Math) PTCB Practice Exam (Math).pdf
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C $3.20
D $7.05
200 mL of the 50% and 400 mL of the 5%
You are planning to prepare 600 mL of 20% dextrose solution, by mixing your 5% and 50% dextrose
solution. How much of each solution will be needed?
A 350 mL of the 50% and 250 mL of the 5%
B 300 mL of the 50% and 100 mL of the 5%
C 200 mL of the 50% and 400 mL of the 5%
D 300 mL of the 50% and 300 mL of the 5%
23.3
To convert from Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature and then divide by
1.8.
Seventy-four degrees Fahrenheit is equal to what temperature in Celsius?
A 74.0
B 23.3
C 18.3
D 30.7
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, Page 3 of 20 PTCB Practice Exam (Math) PTCB Practice Exam (Math).pdf
125 minutes
10 gtt/mL means 10 drops per mL. So for 500 mL you will get: 10 X 500 = 5,000 drops. The flow rate is 40
gtt/min, which means 40 drops per minute, so divide total drops by 40 to get the number of minutes:
5,000/40 = 125.
An order is written for 500 mL of NS to infuse at 40 gtt/min. How long would it take to infuse the NS if
the set delivers 10 gtt/mL?
A 40 minutes
B 125 minutes
C 50 minutes
D 100 minutes
12.1 lb
A kilogram is equal to 2.2 pounds. 5.5 X 2.2 = 12.1
Convert 5.5 kg to pounds.
A 1.21 lb
B 55 lb
C 12.1 lb
D 0.55 lb
Page 3 PTCB Practice Exam (Math) PTCB Practice Exam (Math).pdf
PTCB Practice Exam (Math)
20 gtt
First find the total number of minutes: 60 X 4 = 240. Then find mL/min: = 1.67 ml infused in 1
minute. Then multiply this by the drop factor: 1.67 X 12 = 20 drops per minute.
If a physician writes an order for 400 mL of D5W to be infused over a 4-hour time period, and the IV
drop factor is 12 gtt/mL, how many drops per minute should be delivered?
a. 12 gtt
b. 2 gtt
c. 1.67 gtt
d. 20 gtt
$7.05
Gross profit is selling price minus purchase price. For net profit you also need to subtract the dispensing
cost as well.
A drug sells for $29.99 retail and has a wholesale cost of $19.74. The dispensing cost is $3.20. What is
the pharmacy's net profit?
A $10.25
B $29.99
Page 1 PTCB Practice Exam (Math) PTCB Practice Exam (Math).pdf
,Page 2 of 20 PTCB Practice Exam (Math) PTCB Practice Exam (Math).pdf
C $3.20
D $7.05
200 mL of the 50% and 400 mL of the 5%
You are planning to prepare 600 mL of 20% dextrose solution, by mixing your 5% and 50% dextrose
solution. How much of each solution will be needed?
A 350 mL of the 50% and 250 mL of the 5%
B 300 mL of the 50% and 100 mL of the 5%
C 200 mL of the 50% and 400 mL of the 5%
D 300 mL of the 50% and 300 mL of the 5%
23.3
To convert from Fahrenheit to Celsius, subtract 32 from the Fahrenheit temperature and then divide by
1.8.
Seventy-four degrees Fahrenheit is equal to what temperature in Celsius?
A 74.0
B 23.3
C 18.3
D 30.7
Page 2 PTCB Practice Exam (Math) PTCB Practice Exam (Math).pdf
, Page 3 of 20 PTCB Practice Exam (Math) PTCB Practice Exam (Math).pdf
125 minutes
10 gtt/mL means 10 drops per mL. So for 500 mL you will get: 10 X 500 = 5,000 drops. The flow rate is 40
gtt/min, which means 40 drops per minute, so divide total drops by 40 to get the number of minutes:
5,000/40 = 125.
An order is written for 500 mL of NS to infuse at 40 gtt/min. How long would it take to infuse the NS if
the set delivers 10 gtt/mL?
A 40 minutes
B 125 minutes
C 50 minutes
D 100 minutes
12.1 lb
A kilogram is equal to 2.2 pounds. 5.5 X 2.2 = 12.1
Convert 5.5 kg to pounds.
A 1.21 lb
B 55 lb
C 12.1 lb
D 0.55 lb
Page 3 PTCB Practice Exam (Math) PTCB Practice Exam (Math).pdf
