Dosage Calculations Latest Practice Test with 200
Questions and Correct Detailed Answers/ Medication
Calculations Practice Test 2026-2027/ Med Math and
Dosage Calculation Practice Exam
The nurse is preparing the change-of-shift report for a client who has a 265 ml
secondary infusion that was started 2 hours ago at a rate of 85 ml/hour via an
infusion pump. The nurse should report that how many ml remain to be infused by
the on-coming nurse? (Enter numeric value only.) - ANSWER-95
85 ml x 2 hours = 170 ml has infused. 265 ml (total amount to be infused) - 170 ml
(amount infused) = 95 ml remain to be infused.
The nurse is administering a 250 milliliter (ml) intravenous solution to be infused
over 2 hours. How many ml/hour should the nurse program the infusion pump?
(Enter numeric value only.) - ANSWER-125
250 ml : 2 hours = X ml : 1 hour 250 = 2X X = 250 divided by 2 = 125 ml/hr
The nurse is preparing to administer 0.25 mg of bumetanide (Bumex) IV. The
medication is available in a vial labeled 1 mg/4 ml. How many ml of medication
should the nurse administer? (Enter numeric value only.) - ANSWER-1
Using the Desired/Have x Volume formula: Desired = 0.25 mg Have = 1 mg
Volume = 4 ml 0.25 mg/1 mg x 4 ml = 1 ml
1
,A client with hypertension receives a prescription for carteolol (Cartel) 7.5 mg PO
daily. The drug is available in 2.5 mg tablets. How many tablets should the nurse
administer? (Enter numeric value only.) - ANSWER-3
Using D/H: 7.5 mg / 2.5 mg = 3 tablets
The healthcare provider prescribes trimethoprim-sulfamethoxazole (Bactrim-DS
Oral Suspension) 120 mg BID for a child with bronchitis. The Bactrim bottle is
labeled 200 mg/5ml. How many ml should the nurse administer at each dose?
(Enter numeric value only.) - ANSWER-3
Using the formula D/H x Q, 120/200 x 5 = 3 ml
A 180-pound adult male is admitted to the Emergency Center after receiving
thermal burns to 60 percent of his body. Using the Parkland formula of 4 ml/kg/24
hours, the client should receive how many ml of fluid during the first 24 hours?
(Enter numeric value only. If rounding is required, round to the nearest whole
number.) - ANSWER-19632
Using the Parkland formula, the client's fluid requirements for the first 24 hours
after injury: 4 ml lactated Ringer's solution x Body weight (in kilograms) x Percent
burn. Convert 180 pounds to kg = .2 = 81.8 kg 4 ml x 81.8 kg x 60 = 19632
ml over the first 24 hours.
The healthcare provider prescribes acetazolamide (Diamox) 600 mg/m2/day
divided into 3 doses. The nurse calculates the child's body surface area (BSA) as
0.7 m2. How many mg should the child receive per dose? (Enter numeric value
only.) - ANSWER-140
2
,Using the child's BSA, 0.7 m2, calculate the mg/dose, 600 mg x 0.7 m2 = 420
mg/day/3 doses = 140 mg/dose
A loading dose of acetylcysteine (Mucomyst) 8 grams, which is available as a 20%
solution (200 mg acetylcysteine per ml) is prescribed by nasogastric tube for a
client with acetaminophen toxicity. How many ml of diluent should be added to
the medication to obtain a 1:4 concentration? (Enter numeric value only. If
rounding is required, round to the nearest whole number.) - ANSWER-120
8 grams = 8,000 mg prescribed dose. Using the formula, D/H x Q, 8,000 mg / 200
mg x 1 ml = 40 ml of the 20% solution. Dilute the 40 ml to a 1:4 concentration for
administration using ratio and proportion, 1 : 4 solution :: 40 ml : X X= 160 ml
total volume to administer. Subtract total volume of 160 ml - 40 ml of 20%
concentration = 120 ml diluent is added to obtain a 1:4 concentration.
A child who weighs 55 pounds receives a prescription for atovaquone with
proguanil (Malarone Pediatric) 125 mg/50 mg PO daily. A drug reference states
that children 11 to 20 kg should receive 1 pediatric tablet daily; 21 to 30 kg should
receive 2 pediatric tablets daily; 31 to 40 kg should receive 3 pediatric tablets
daily; and greater than 40 kg should receive 1 adult tablet daily with food. The
drug is available as atovaquone 62.5 mg/proguanil 25 mg pediatric tablets. How
many tablets should the nurse administer? - ANSWER-2
Calculate each drug component dose, using the formula, D/H 125 mg / 62.5 mg
(atovaquone) = 2 combined with 50 mg / 25 mg (proguanil) = 2. The child should
receive 2 tablets.
A client receives a prescription for azithromycin (Zithromax) 500 mg PO x 3 days.
Azithromycin is available as 250 mg scored tablets. How many tablets should the
nurse administer per dose? (Enter numeric value only. - ANSWER-2
3
, Using the formula, D/H 500 mg/250 mg = 2 tablets
A child who is scheduled for a kidney transplant receives a prescription for
basiliximab (Simulect) 20 mg IV 2 hours prior to surgery. The medication is
available in a 20 mg vial that is reconstituted by adding 5 ml sterile water for
injection, and administered in a 50 ml bag of normal saline over 30 minutes. The
nurse should program the infusion pump to deliver how many ml/hour? (Enter
numeric value only. - ANSWER-110
After reconstituting the medication vial, the nurse adds the 5 ml of medication to
the 50 ml of sterile water to result in a 55 ml volume to infuse in 30 minutes. Using
the formula, Volume/Time = 55 ml / 0.5 hours = 110 ml/hour
A client with a gastrostomy tube (GT) receives a prescription for Osmolite® 1/2
strength enteral formula at 80 ml/hour. To prepare a 4 hour solution, the nurse
should dilute the full-strength formula with how many ml of water? (Enter numeric
value only.) - ANSWER-160
Determine the total volume needed at 80 ml/hour x 4 hours = 320 ml. Use the
formula, Desired strength/strength on Hand x Volume = 50/100 x 320 = 160 ml of
Osmolite® enteral formula, which must be diluted to half strength. Or use ratio and
proportion, Desired strength (1/2 = 1 part : 2 parts) :: Volume of full strength :
Total Desire volume 1 : 2 :: X : 320 ml 2X = 320, and X = 160 ml of Osmolite®
enteral formula, full strength 320 ml total volume - 160 ml of full-strength formula
= 160 ml of water to create 1/2 strength or 50% concentration.
A client with cardiogenic shock weighs 220 lb and is receiving dopamine at the
rate of 3 mcg/kg/minute. The solution strength available is dopamine 400 mg in
250 ml of D5W. The nurse should set the infusion pump to deliver how many
ml/hour? (Enter numeric value only. If rounding is required, round to the nearest
tenth.) - ANSWER-11.3
4
Questions and Correct Detailed Answers/ Medication
Calculations Practice Test 2026-2027/ Med Math and
Dosage Calculation Practice Exam
The nurse is preparing the change-of-shift report for a client who has a 265 ml
secondary infusion that was started 2 hours ago at a rate of 85 ml/hour via an
infusion pump. The nurse should report that how many ml remain to be infused by
the on-coming nurse? (Enter numeric value only.) - ANSWER-95
85 ml x 2 hours = 170 ml has infused. 265 ml (total amount to be infused) - 170 ml
(amount infused) = 95 ml remain to be infused.
The nurse is administering a 250 milliliter (ml) intravenous solution to be infused
over 2 hours. How many ml/hour should the nurse program the infusion pump?
(Enter numeric value only.) - ANSWER-125
250 ml : 2 hours = X ml : 1 hour 250 = 2X X = 250 divided by 2 = 125 ml/hr
The nurse is preparing to administer 0.25 mg of bumetanide (Bumex) IV. The
medication is available in a vial labeled 1 mg/4 ml. How many ml of medication
should the nurse administer? (Enter numeric value only.) - ANSWER-1
Using the Desired/Have x Volume formula: Desired = 0.25 mg Have = 1 mg
Volume = 4 ml 0.25 mg/1 mg x 4 ml = 1 ml
1
,A client with hypertension receives a prescription for carteolol (Cartel) 7.5 mg PO
daily. The drug is available in 2.5 mg tablets. How many tablets should the nurse
administer? (Enter numeric value only.) - ANSWER-3
Using D/H: 7.5 mg / 2.5 mg = 3 tablets
The healthcare provider prescribes trimethoprim-sulfamethoxazole (Bactrim-DS
Oral Suspension) 120 mg BID for a child with bronchitis. The Bactrim bottle is
labeled 200 mg/5ml. How many ml should the nurse administer at each dose?
(Enter numeric value only.) - ANSWER-3
Using the formula D/H x Q, 120/200 x 5 = 3 ml
A 180-pound adult male is admitted to the Emergency Center after receiving
thermal burns to 60 percent of his body. Using the Parkland formula of 4 ml/kg/24
hours, the client should receive how many ml of fluid during the first 24 hours?
(Enter numeric value only. If rounding is required, round to the nearest whole
number.) - ANSWER-19632
Using the Parkland formula, the client's fluid requirements for the first 24 hours
after injury: 4 ml lactated Ringer's solution x Body weight (in kilograms) x Percent
burn. Convert 180 pounds to kg = .2 = 81.8 kg 4 ml x 81.8 kg x 60 = 19632
ml over the first 24 hours.
The healthcare provider prescribes acetazolamide (Diamox) 600 mg/m2/day
divided into 3 doses. The nurse calculates the child's body surface area (BSA) as
0.7 m2. How many mg should the child receive per dose? (Enter numeric value
only.) - ANSWER-140
2
,Using the child's BSA, 0.7 m2, calculate the mg/dose, 600 mg x 0.7 m2 = 420
mg/day/3 doses = 140 mg/dose
A loading dose of acetylcysteine (Mucomyst) 8 grams, which is available as a 20%
solution (200 mg acetylcysteine per ml) is prescribed by nasogastric tube for a
client with acetaminophen toxicity. How many ml of diluent should be added to
the medication to obtain a 1:4 concentration? (Enter numeric value only. If
rounding is required, round to the nearest whole number.) - ANSWER-120
8 grams = 8,000 mg prescribed dose. Using the formula, D/H x Q, 8,000 mg / 200
mg x 1 ml = 40 ml of the 20% solution. Dilute the 40 ml to a 1:4 concentration for
administration using ratio and proportion, 1 : 4 solution :: 40 ml : X X= 160 ml
total volume to administer. Subtract total volume of 160 ml - 40 ml of 20%
concentration = 120 ml diluent is added to obtain a 1:4 concentration.
A child who weighs 55 pounds receives a prescription for atovaquone with
proguanil (Malarone Pediatric) 125 mg/50 mg PO daily. A drug reference states
that children 11 to 20 kg should receive 1 pediatric tablet daily; 21 to 30 kg should
receive 2 pediatric tablets daily; 31 to 40 kg should receive 3 pediatric tablets
daily; and greater than 40 kg should receive 1 adult tablet daily with food. The
drug is available as atovaquone 62.5 mg/proguanil 25 mg pediatric tablets. How
many tablets should the nurse administer? - ANSWER-2
Calculate each drug component dose, using the formula, D/H 125 mg / 62.5 mg
(atovaquone) = 2 combined with 50 mg / 25 mg (proguanil) = 2. The child should
receive 2 tablets.
A client receives a prescription for azithromycin (Zithromax) 500 mg PO x 3 days.
Azithromycin is available as 250 mg scored tablets. How many tablets should the
nurse administer per dose? (Enter numeric value only. - ANSWER-2
3
, Using the formula, D/H 500 mg/250 mg = 2 tablets
A child who is scheduled for a kidney transplant receives a prescription for
basiliximab (Simulect) 20 mg IV 2 hours prior to surgery. The medication is
available in a 20 mg vial that is reconstituted by adding 5 ml sterile water for
injection, and administered in a 50 ml bag of normal saline over 30 minutes. The
nurse should program the infusion pump to deliver how many ml/hour? (Enter
numeric value only. - ANSWER-110
After reconstituting the medication vial, the nurse adds the 5 ml of medication to
the 50 ml of sterile water to result in a 55 ml volume to infuse in 30 minutes. Using
the formula, Volume/Time = 55 ml / 0.5 hours = 110 ml/hour
A client with a gastrostomy tube (GT) receives a prescription for Osmolite® 1/2
strength enteral formula at 80 ml/hour. To prepare a 4 hour solution, the nurse
should dilute the full-strength formula with how many ml of water? (Enter numeric
value only.) - ANSWER-160
Determine the total volume needed at 80 ml/hour x 4 hours = 320 ml. Use the
formula, Desired strength/strength on Hand x Volume = 50/100 x 320 = 160 ml of
Osmolite® enteral formula, which must be diluted to half strength. Or use ratio and
proportion, Desired strength (1/2 = 1 part : 2 parts) :: Volume of full strength :
Total Desire volume 1 : 2 :: X : 320 ml 2X = 320, and X = 160 ml of Osmolite®
enteral formula, full strength 320 ml total volume - 160 ml of full-strength formula
= 160 ml of water to create 1/2 strength or 50% concentration.
A client with cardiogenic shock weighs 220 lb and is receiving dopamine at the
rate of 3 mcg/kg/minute. The solution strength available is dopamine 400 mg in
250 ml of D5W. The nurse should set the infusion pump to deliver how many
ml/hour? (Enter numeric value only. If rounding is required, round to the nearest
tenth.) - ANSWER-11.3
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