1
NLN NEX Math
Questions 1–180 | National League for Nursing NEX Math Exam Prep | 100% Pass
Guaranteed | Graded A+
1. A nurse is preparing to administer 750 mg of a medication. The pharmacy supplies
the medication in 250 mg tablets. How many tablets should the nurse administer?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct answer: C
Explanation: Using the formula: Desired dose ÷ Available dose × Quantity = 750 mg ÷
250 mg × 1 tablet = 3 tablets. The nurse should administer 3 tablets to deliver the
prescribed dose.
2. Convert 3.5 kilograms to pounds. (Round to the nearest tenth.)
A. 6.5 lb
B. 7.0 lb
C. 7.7 lb
D. 8.0 lb
Correct answer: C
Explanation: To convert kilograms to pounds, multiply by 2.2. 3.5 kg × 2.2 = 7.7 lb. This
is a standard conversion factor used in medication calculations.
3. A provider orders 1,500 mL of normal saline to infuse over 10 hours. The drop
factor is 15 gtt/mL. What is the flow rate in drops per minute?
,2
A. 32 gtt/min
B. 38 gtt/min
C. 42 gtt/min
D. 45 gtt/min
Correct answer: B
Explanation: Using the formula: (Volume × Drop factor) ÷ Time in minutes = (1,500 mL ×
15 gtt/mL) ÷ 600 minutes = 22,500 ÷ 600 = 37.5, which rounds to 38 gtt/min.
4. Convert 1.25 grams to milligrams.
A. 125 mg
B. 1,250 mg
C. 12,500 mg
D. 125,000 mg
Correct answer: B
Explanation: To convert grams to milligrams, multiply by 1,000. 1.25 g × 1,000 = 1,250
mg. This is a fundamental metric conversion in medication administration.
5. A patient weighs 220 pounds. What is the patient's weight in kilograms?
A. 90 kg
B. 95 kg
C. 100 kg
D. 105 kg
Correct answer: C
Explanation: To convert pounds to kilograms, divide by 2.2. 220 lb ÷ 2.2 = 100 kg. This
conversion is essential for weight-based dosing.
6. A medication order reads: Administer 0.75 mg of levothyroxine PO daily. The
pharmacy provides levothyroxine 0.25 mg tablets. How many tablets should the
nurse administer?
A. 1 tablet
B. 2 tablets
,3
C. 3 tablets
D. 4 tablets
Correct answer: C
Explanation: Using the formula: Desired ÷ Available × Quantity = 0.75 mg ÷ 0.25 mg × 1
tablet = 3 tablets. The nurse should administer 3 tablets.
7. Solve for x: 5/8 = x/24
A. 12
B. 15
C. 18
D. 20
Correct answer: B
Explanation: Cross-multiply: 5 × 24 = 8 × x, so 120 = 8x. Divide both sides by 8: x = 15.
This is a basic ratio and proportion problem common in dosage calculations.
8. A nurse is administering 2,000 mL of IV fluid over 16 hours. What is the hourly rate
in mL/hr?
A. 100 mL/hr
B. 115 mL/hr
C. 125 mL/hr
D. 150 mL/hr
Correct answer: C
Explanation: Divide the total volume by the total time: 2,000 mL ÷ 16 hours = 125
mL/hr. This is the rate at which the IV pump should be set.
9. Convert 45 milliliters to teaspoons. (1 tsp = 5 mL)
A. 5 tsp
B. 7 tsp
C. 9 tsp
D. 11 tsp
, 4
Correct answer: C
Explanation: To convert mL to teaspoons, divide by 5. 45 mL ÷ 5 mL/tsp = 9 tsp. This
conversion is commonly used for oral liquid medications.
10. A patient is prescribed 3,000 mg of a medication. The medication is available as
500 mg/5 mL. How many milliliters should the nurse administer?
A. 15 mL
B. 20 mL
C. 25 mL
D. 30 mL
Correct answer: D
Explanation: Using the formula: Desired ÷ Available × Quantity = 3,000 mg ÷ 500 mg × 5
mL = 6 × 5 = 30 mL. The nurse should administer 30 mL.
11. What is 40% of 350?
A. 120
B. 130
C. 140
D. 150
Correct answer: C
Explanation: To find 40% of 350, multiply 350 by 0.40: 350 × 0.40 = 140. Alternatively,
40% is 0.4, so 350 × 0.4 = 140.
12. A nurse needs to administer 0.25 mg of digoxin. The pharmacy provides digoxin
0.125 mg tablets. How many tablets should the nurse give?
A. 0.5 tablet
B. 1 tablet
C. 2 tablets
D. 3 tablets
NLN NEX Math
Questions 1–180 | National League for Nursing NEX Math Exam Prep | 100% Pass
Guaranteed | Graded A+
1. A nurse is preparing to administer 750 mg of a medication. The pharmacy supplies
the medication in 250 mg tablets. How many tablets should the nurse administer?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct answer: C
Explanation: Using the formula: Desired dose ÷ Available dose × Quantity = 750 mg ÷
250 mg × 1 tablet = 3 tablets. The nurse should administer 3 tablets to deliver the
prescribed dose.
2. Convert 3.5 kilograms to pounds. (Round to the nearest tenth.)
A. 6.5 lb
B. 7.0 lb
C. 7.7 lb
D. 8.0 lb
Correct answer: C
Explanation: To convert kilograms to pounds, multiply by 2.2. 3.5 kg × 2.2 = 7.7 lb. This
is a standard conversion factor used in medication calculations.
3. A provider orders 1,500 mL of normal saline to infuse over 10 hours. The drop
factor is 15 gtt/mL. What is the flow rate in drops per minute?
,2
A. 32 gtt/min
B. 38 gtt/min
C. 42 gtt/min
D. 45 gtt/min
Correct answer: B
Explanation: Using the formula: (Volume × Drop factor) ÷ Time in minutes = (1,500 mL ×
15 gtt/mL) ÷ 600 minutes = 22,500 ÷ 600 = 37.5, which rounds to 38 gtt/min.
4. Convert 1.25 grams to milligrams.
A. 125 mg
B. 1,250 mg
C. 12,500 mg
D. 125,000 mg
Correct answer: B
Explanation: To convert grams to milligrams, multiply by 1,000. 1.25 g × 1,000 = 1,250
mg. This is a fundamental metric conversion in medication administration.
5. A patient weighs 220 pounds. What is the patient's weight in kilograms?
A. 90 kg
B. 95 kg
C. 100 kg
D. 105 kg
Correct answer: C
Explanation: To convert pounds to kilograms, divide by 2.2. 220 lb ÷ 2.2 = 100 kg. This
conversion is essential for weight-based dosing.
6. A medication order reads: Administer 0.75 mg of levothyroxine PO daily. The
pharmacy provides levothyroxine 0.25 mg tablets. How many tablets should the
nurse administer?
A. 1 tablet
B. 2 tablets
,3
C. 3 tablets
D. 4 tablets
Correct answer: C
Explanation: Using the formula: Desired ÷ Available × Quantity = 0.75 mg ÷ 0.25 mg × 1
tablet = 3 tablets. The nurse should administer 3 tablets.
7. Solve for x: 5/8 = x/24
A. 12
B. 15
C. 18
D. 20
Correct answer: B
Explanation: Cross-multiply: 5 × 24 = 8 × x, so 120 = 8x. Divide both sides by 8: x = 15.
This is a basic ratio and proportion problem common in dosage calculations.
8. A nurse is administering 2,000 mL of IV fluid over 16 hours. What is the hourly rate
in mL/hr?
A. 100 mL/hr
B. 115 mL/hr
C. 125 mL/hr
D. 150 mL/hr
Correct answer: C
Explanation: Divide the total volume by the total time: 2,000 mL ÷ 16 hours = 125
mL/hr. This is the rate at which the IV pump should be set.
9. Convert 45 milliliters to teaspoons. (1 tsp = 5 mL)
A. 5 tsp
B. 7 tsp
C. 9 tsp
D. 11 tsp
, 4
Correct answer: C
Explanation: To convert mL to teaspoons, divide by 5. 45 mL ÷ 5 mL/tsp = 9 tsp. This
conversion is commonly used for oral liquid medications.
10. A patient is prescribed 3,000 mg of a medication. The medication is available as
500 mg/5 mL. How many milliliters should the nurse administer?
A. 15 mL
B. 20 mL
C. 25 mL
D. 30 mL
Correct answer: D
Explanation: Using the formula: Desired ÷ Available × Quantity = 3,000 mg ÷ 500 mg × 5
mL = 6 × 5 = 30 mL. The nurse should administer 30 mL.
11. What is 40% of 350?
A. 120
B. 130
C. 140
D. 150
Correct answer: C
Explanation: To find 40% of 350, multiply 350 by 0.40: 350 × 0.40 = 140. Alternatively,
40% is 0.4, so 350 × 0.4 = 140.
12. A nurse needs to administer 0.25 mg of digoxin. The pharmacy provides digoxin
0.125 mg tablets. How many tablets should the nurse give?
A. 0.5 tablet
B. 1 tablet
C. 2 tablets
D. 3 tablets
