Dosage Calculation Basics Test Exam
With Correct Verified And Well
Analyzed Answers Graded A+ | 2026
Latest Update!!!
1. A physician orders 500 mg of a medication. The available tablet
strength is 250 mg. How many tablets should the nurse administer?
A. 1 tablet
B. 1.5 tablets
C. 2 tablets
D. 3 tablets
Answer: C. 2 tablets
Rationale: To determine the number of tablets, divide the prescribed
dose by the available dose: 500 mg ÷ 250 mg = 2 tablets. Accurate
tablet calculation prevents underdosing or overdosing.
2. A medication order reads 1 g. How many milligrams should be
administered?
A. 10 mg
B. 100 mg
C. 500 mg
D. 1000 mg
Answer: D. 1000 mg
,Rationale: One gram equals 1000 milligrams. Understanding metric
conversions is essential for safe medication administration.
3. A child is prescribed 15 mL of liquid acetaminophen. The
medication cup measures in teaspoons. How many teaspoons
should be given?
A. 1 tsp
B. 2 tsp
C. 3 tsp
D. 4 tsp
Answer: C. 3 tsp
Rationale: One teaspoon equals 5 mL. Divide 15 mL by 5 mL to obtain
3 teaspoons.
4. The order states to administer 0.5 g of medication. The
medication label reads 250 mg per tablet. How many tablets
are required?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Answer: B. 2 tablets
Rationale: First convert 0.5 g to milligrams: 0.5 g = 500 mg. Then
divide 500 mg by 250 mg per tablet to get 2 tablets.
5. A nurse must administer 30 units of insulin using U-100
insulin. How many milliliters should be drawn up?
A. 0.1 mL
B. 0.2 mL
,C. 0.3 mL
D. 0.5 mL
Answer: C. 0.3 mL
Rationale: U-100 insulin contains 100 units per mL. Divide 30 units by
100 units to determine the volume: 0.3 mL.
6. A medication is available as 125 mg per 5 mL. The patient
needs 250 mg. How many milliliters should the nurse
administer?
A. 5 mL
B. 10 mL
C. 15 mL
D. 20 mL
Answer: B. 10 mL
Rationale: If 125 mg is contained in 5 mL, then 250 mg requires
double the volume. Therefore, 10 mL is needed.
7. A prescription reads 2 mg. The medication is supplied as 400
mcg tablets. How many tablets should be administered?
A. 2 tablets
B. 3 tablets
C. 4 tablets
D. 5 tablets
Answer: D. 5 tablets
Rationale: Convert 2 mg to micrograms: 2 mg = 2000 mcg. Divide
2000 mcg by 400 mcg per tablet to obtain 5 tablets.
8. How many milliliters are equal to 1 liter?
, A. 100 mL
B. 500 mL
C. 1000 mL
D. 1500 mL
Answer: C. 1000 mL
Rationale: One liter equals 1000 milliliters. Nurses frequently use this
conversion for IV fluids and oral solutions.
9. The physician orders 750 mg of medication. Capsules available
contain 250 mg each. How many capsules should be
administered?
A. 1 capsule
B. 2 capsules
C. 3 capsules
D. 4 capsules
Answer: C. 3 capsules
Rationale: Divide the prescribed dose by the available dose: 750 mg ÷
250 mg = 3 capsules.
10. A patient requires 0.25 mg of digoxin. The tablet
available is 125 mcg. How many tablets should be given?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Answer: B. 2 tablets
Rationale: Convert 0.25 mg to micrograms: 250 mcg. Divide 250 mcg
by 125 mcg to determine that 2 tablets are required.
With Correct Verified And Well
Analyzed Answers Graded A+ | 2026
Latest Update!!!
1. A physician orders 500 mg of a medication. The available tablet
strength is 250 mg. How many tablets should the nurse administer?
A. 1 tablet
B. 1.5 tablets
C. 2 tablets
D. 3 tablets
Answer: C. 2 tablets
Rationale: To determine the number of tablets, divide the prescribed
dose by the available dose: 500 mg ÷ 250 mg = 2 tablets. Accurate
tablet calculation prevents underdosing or overdosing.
2. A medication order reads 1 g. How many milligrams should be
administered?
A. 10 mg
B. 100 mg
C. 500 mg
D. 1000 mg
Answer: D. 1000 mg
,Rationale: One gram equals 1000 milligrams. Understanding metric
conversions is essential for safe medication administration.
3. A child is prescribed 15 mL of liquid acetaminophen. The
medication cup measures in teaspoons. How many teaspoons
should be given?
A. 1 tsp
B. 2 tsp
C. 3 tsp
D. 4 tsp
Answer: C. 3 tsp
Rationale: One teaspoon equals 5 mL. Divide 15 mL by 5 mL to obtain
3 teaspoons.
4. The order states to administer 0.5 g of medication. The
medication label reads 250 mg per tablet. How many tablets
are required?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Answer: B. 2 tablets
Rationale: First convert 0.5 g to milligrams: 0.5 g = 500 mg. Then
divide 500 mg by 250 mg per tablet to get 2 tablets.
5. A nurse must administer 30 units of insulin using U-100
insulin. How many milliliters should be drawn up?
A. 0.1 mL
B. 0.2 mL
,C. 0.3 mL
D. 0.5 mL
Answer: C. 0.3 mL
Rationale: U-100 insulin contains 100 units per mL. Divide 30 units by
100 units to determine the volume: 0.3 mL.
6. A medication is available as 125 mg per 5 mL. The patient
needs 250 mg. How many milliliters should the nurse
administer?
A. 5 mL
B. 10 mL
C. 15 mL
D. 20 mL
Answer: B. 10 mL
Rationale: If 125 mg is contained in 5 mL, then 250 mg requires
double the volume. Therefore, 10 mL is needed.
7. A prescription reads 2 mg. The medication is supplied as 400
mcg tablets. How many tablets should be administered?
A. 2 tablets
B. 3 tablets
C. 4 tablets
D. 5 tablets
Answer: D. 5 tablets
Rationale: Convert 2 mg to micrograms: 2 mg = 2000 mcg. Divide
2000 mcg by 400 mcg per tablet to obtain 5 tablets.
8. How many milliliters are equal to 1 liter?
, A. 100 mL
B. 500 mL
C. 1000 mL
D. 1500 mL
Answer: C. 1000 mL
Rationale: One liter equals 1000 milliliters. Nurses frequently use this
conversion for IV fluids and oral solutions.
9. The physician orders 750 mg of medication. Capsules available
contain 250 mg each. How many capsules should be
administered?
A. 1 capsule
B. 2 capsules
C. 3 capsules
D. 4 capsules
Answer: C. 3 capsules
Rationale: Divide the prescribed dose by the available dose: 750 mg ÷
250 mg = 3 capsules.
10. A patient requires 0.25 mg of digoxin. The tablet
available is 125 mcg. How many tablets should be given?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Answer: B. 2 tablets
Rationale: Convert 0.25 mg to micrograms: 250 mcg. Divide 250 mcg
by 125 mcg to determine that 2 tablets are required.
