BSN HESI 215 DOSAGE CALCULATION ACTUAL EXAM
2026/2027 | Nightingale College | Questions & Verified
Answers | Pass Guaranteed - A+ Graded
Section 1: Basic Conversions & Ratios (Questions 1–8)
Q1: The provider orders 0.5 g of a medication. The pharmacy sends tablets labeled 250
mg each. How many tablets will the nurse administer?
A. 0.5 tablets
B. 1 tablet
C. 2 tablets [CORRECT]
D. 4 tablets
Correct Answer: C
Rationale: On the HESI dosage calculation exam, remember to always convert grams to
milligrams first—0.5 g equals 500 mg. Then divide 500 mg by 250 mg per tablet to get 2
tablets. Always double-check your decimal placement when converting between units.
Q2: A pediatric patient needs 240 mcg of a medication. The available concentration is
0.4 mg per mL. How many mL will the nurse draw up?
A. 0.06 mL
B. 0.6 mL [CORRECT]
C. 6 mL
,D. 60 mL
Correct Answer: B
Rationale: First convert 240 mcg to mg—that's 0.24 mg. The correct formula setup is
desired over have: 0.24 mg divided by 0.4 mg per mL equals 0.6 mL. Watch out for
decimal errors here—it's easy to slip a decimal place and get 6 mL instead of 0.6 mL.
Q3: Which conversion factor is correct when converting from pounds to kilograms?
A. 1 lb = 0.45 kg
B. 1 kg = 2.2 lb [CORRECT]
C. 1 kg = 16 lb
D. 1 lb = 16 kg
Correct Answer: B
Rationale: That's right because when you convert weight for pediatric or adult dosing,
you divide the weight in pounds by 2.2 to get kilograms. Some students accidentally
multiply by 2.2 instead of dividing, which gives you a wildly wrong weight.
Q4: The nurse needs to convert 3 tablespoons to milliliters for accurate dosing. How
many mL is this?
A. 15 mL
B. 30 mL
C. 45 mL [CORRECT]
, D. 60 mL
Correct Answer: C
Rationale: The standard conversion is 1 tablespoon equals 15 mL, so 3 tablespoons
times 15 gives you 45 mL. Don't confuse tablespoons with teaspoons—1 teaspoon is
only 5 mL, which would give you 15 mL total if you used the wrong conversion.
Q5: A medication order reads: "Give gr 1/4 of medication X." The available tablets are 15
mg each. How many tablets should the nurse administer?
A. 0.25 tablets
B. 0.5 tablets
C. 1 tablet [CORRECT]
D. 2 tablets
Correct Answer: C
Rationale: On the HESI dosage calculation exam, remember that 1 grain equals
approximately 60-65 mg, but the standard conversion used is 1 gr = 60 mg. So 1/4 grain
equals 15 mg, which matches one tablet exactly. Grains can be tricky because they're an
older apothecary measurement.
Q6: The nurse is preparing to administer 2.5 L of fluid over 24 hours. How many
milliliters is this?
A. 250 mL
B. 2,500 mL [CORRECT]
2026/2027 | Nightingale College | Questions & Verified
Answers | Pass Guaranteed - A+ Graded
Section 1: Basic Conversions & Ratios (Questions 1–8)
Q1: The provider orders 0.5 g of a medication. The pharmacy sends tablets labeled 250
mg each. How many tablets will the nurse administer?
A. 0.5 tablets
B. 1 tablet
C. 2 tablets [CORRECT]
D. 4 tablets
Correct Answer: C
Rationale: On the HESI dosage calculation exam, remember to always convert grams to
milligrams first—0.5 g equals 500 mg. Then divide 500 mg by 250 mg per tablet to get 2
tablets. Always double-check your decimal placement when converting between units.
Q2: A pediatric patient needs 240 mcg of a medication. The available concentration is
0.4 mg per mL. How many mL will the nurse draw up?
A. 0.06 mL
B. 0.6 mL [CORRECT]
C. 6 mL
,D. 60 mL
Correct Answer: B
Rationale: First convert 240 mcg to mg—that's 0.24 mg. The correct formula setup is
desired over have: 0.24 mg divided by 0.4 mg per mL equals 0.6 mL. Watch out for
decimal errors here—it's easy to slip a decimal place and get 6 mL instead of 0.6 mL.
Q3: Which conversion factor is correct when converting from pounds to kilograms?
A. 1 lb = 0.45 kg
B. 1 kg = 2.2 lb [CORRECT]
C. 1 kg = 16 lb
D. 1 lb = 16 kg
Correct Answer: B
Rationale: That's right because when you convert weight for pediatric or adult dosing,
you divide the weight in pounds by 2.2 to get kilograms. Some students accidentally
multiply by 2.2 instead of dividing, which gives you a wildly wrong weight.
Q4: The nurse needs to convert 3 tablespoons to milliliters for accurate dosing. How
many mL is this?
A. 15 mL
B. 30 mL
C. 45 mL [CORRECT]
, D. 60 mL
Correct Answer: C
Rationale: The standard conversion is 1 tablespoon equals 15 mL, so 3 tablespoons
times 15 gives you 45 mL. Don't confuse tablespoons with teaspoons—1 teaspoon is
only 5 mL, which would give you 15 mL total if you used the wrong conversion.
Q5: A medication order reads: "Give gr 1/4 of medication X." The available tablets are 15
mg each. How many tablets should the nurse administer?
A. 0.25 tablets
B. 0.5 tablets
C. 1 tablet [CORRECT]
D. 2 tablets
Correct Answer: C
Rationale: On the HESI dosage calculation exam, remember that 1 grain equals
approximately 60-65 mg, but the standard conversion used is 1 gr = 60 mg. So 1/4 grain
equals 15 mg, which matches one tablet exactly. Grains can be tricky because they're an
older apothecary measurement.
Q6: The nurse is preparing to administer 2.5 L of fluid over 24 hours. How many
milliliters is this?
A. 250 mL
B. 2,500 mL [CORRECT]
