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Drug Dosage Calculations Practice Exam: 100
Comprehensive Questions and Answers with
Detailed Rationales for Nursing Students,
Covering Metric Conversions, Percentage
Solutions, IV Flow Rates, and Pediatric Dosing,
Updated for 2025-2026, Graded A+
A patient with a tidal volume of 400 milliliters has a tidal volume of how many
liters?
40
4
.400
.04
Answer: .400L
A patient who weighs 55 kilograms is to receive a drug dosage of 10mg/kg. How
much drug should be administered?
550 mg
250 mg
25 mg
5.5 mg
Answer: 550 mg. To determine the dosage to administer, simply multiply 55 kg by
10 mg (55 kg x 10 mg = 550 mg).
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A solution of drug contains 80 units/ml. How many milliliters would you need to
deliver 320 units of the drug?
0.4 ml
4 ml
14 ml
40 ml
Answer: 4 ml. Refer to example calculation 8 in the textbook to set up your
calculation and solve for X.
A medication bag contains 0.03 liters. This is equal to how many milliliters?
3
30
300
3,000
Answer: 30. Refer to Table 2-2 to convert from liters to milliliters.
Virazole is supplied in a powder form that must be mixed with normal saline or
sterile water prior to nebulization. This type of solution represents a:
Solid/solvent
Weight/volume
Liquid/solute
Volume/volume
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Answer: Weight/volume. A drug solution that consists of the active drug in solid
(or powder) form mixed with a liquid solvent is considered a weight/volume
solution.
How much active drug is in 3 ml of a 10% solution?
0.3 g
1g
0.3 mg
1 mg
Answer: 0.3 g. By definition (%solution = g). Solve: 3 x .10 = 0.3
A rescue dosage of surfactant calls for 3 ml/kg body weight. If a premature infant
weighs 1,500 g, how many milliliters are needed?
5.0 ml
9.0 ml
0.45 ml
4.5 ml
Answer: 4.5 ml. You first convert the baby's weight from grams to kilograms.
Then you determine how many milliliters are needed if the required dosage is 3 ml
per kilogram by multiplying 3 by the weight in kg (3 ml x 1.5 kg).
What strength of drug would be administered if 6 g of active ingredient is
reconstituted with sterile water to a total volume of 300 ml?
2% strength
0.5% strength
Drug Dosage Calculations Practice Exam: 100
Comprehensive Questions and Answers with
Detailed Rationales for Nursing Students,
Covering Metric Conversions, Percentage
Solutions, IV Flow Rates, and Pediatric Dosing,
Updated for 2025-2026, Graded A+
A patient with a tidal volume of 400 milliliters has a tidal volume of how many
liters?
40
4
.400
.04
Answer: .400L
A patient who weighs 55 kilograms is to receive a drug dosage of 10mg/kg. How
much drug should be administered?
550 mg
250 mg
25 mg
5.5 mg
Answer: 550 mg. To determine the dosage to administer, simply multiply 55 kg by
10 mg (55 kg x 10 mg = 550 mg).
,2|Page
A solution of drug contains 80 units/ml. How many milliliters would you need to
deliver 320 units of the drug?
0.4 ml
4 ml
14 ml
40 ml
Answer: 4 ml. Refer to example calculation 8 in the textbook to set up your
calculation and solve for X.
A medication bag contains 0.03 liters. This is equal to how many milliliters?
3
30
300
3,000
Answer: 30. Refer to Table 2-2 to convert from liters to milliliters.
Virazole is supplied in a powder form that must be mixed with normal saline or
sterile water prior to nebulization. This type of solution represents a:
Solid/solvent
Weight/volume
Liquid/solute
Volume/volume
, 3|Page
Answer: Weight/volume. A drug solution that consists of the active drug in solid
(or powder) form mixed with a liquid solvent is considered a weight/volume
solution.
How much active drug is in 3 ml of a 10% solution?
0.3 g
1g
0.3 mg
1 mg
Answer: 0.3 g. By definition (%solution = g). Solve: 3 x .10 = 0.3
A rescue dosage of surfactant calls for 3 ml/kg body weight. If a premature infant
weighs 1,500 g, how many milliliters are needed?
5.0 ml
9.0 ml
0.45 ml
4.5 ml
Answer: 4.5 ml. You first convert the baby's weight from grams to kilograms.
Then you determine how many milliliters are needed if the required dosage is 3 ml
per kilogram by multiplying 3 by the weight in kg (3 ml x 1.5 kg).
What strength of drug would be administered if 6 g of active ingredient is
reconstituted with sterile water to a total volume of 300 ml?
2% strength
0.5% strength
