BSN 215 HESI Exam Dosage Calculation
Q&A (2026/2027) | Nightingale College
100 Multiple Choice Questions with
Answers and Rationales
SECTION 1: METRIC CONVERSIONS & BASIC MATH
1. Convert 2.5 L to mL.
A) 25 mL
B) 250 mL
C) 2500 mL
D) 25,000 mL
Rationale: 1 L = 1000 mL. Multiply 2.5 × 1000 = 2500 mL. This is
a foundational metric conversion essential for all dosage
calculations .
2. Convert 0.25 mg to mcg.
A) 2.5 mcg
B) 25 mcg
C) 250 mcg
D) 2500 mcg
,Rationale: 1 mg = 1000 mcg. 0.25 × 1000 = 250 mcg. Accurate
conversion between mg and mcg is critical for medications with
narrow therapeutic ranges .
3. Convert 150 lb to kg (round to nearest tenth).
A) 60.0 kg
B) 65.2 kg
C) 68.2 kg
D) 72.0 kg
Rationale: 1 kg = 2.2 lb. 150 lb ÷ 2.2 = 68.18 kg, rounded to 68.2
kg. Weight-based dosing requires accurate lb to kg conversion .
4. A patient drinks 6 oz of juice. How many mL is this?
A) 120 mL
B) 150 mL
C) 180 mL
D) 240 mL
Rationale: 1 oz = 30 mL. 6 × 30 = 180 mL. Household-to-metric
conversions are commonly tested on the HESI exam .
5. Convert 0.05 g to mg.
A) 0.5 mg
B) 5 mg
C) 50 mg
D) 500 mg
Rationale: 1 g = 1000 mg. 0.05 × 1000 = 50 mg. Understanding
metric prefixes is essential for safe medication administration .
,6. How many mL are in 4 tablespoons?
A) 30 mL
B) 45 mL
C) 50 mL
D) 60 mL
Rationale: 1 tablespoon = 15 mL. 4 × 15 = 60 mL. Household
measurements appear in medication administration and
intake/output calculations.
7. Convert 2.2 mg to mcg.
A) 22 mcg
B) 220 mcg
C) 2200 mcg
D) 22,000 mcg
Rationale: 1 mg = 1000 mcg. 2.2 × 1000 = 2200 mcg.
Maintaining decimal place accuracy prevents medication errors .
8. Convert 75 kg to lb (round to nearest whole number).
A) 150 lb
B) 155 lb
C) 165 lb
D) 170 lb
Rationale: 1 kg = 2.2 lb. 75 × 2.2 = 165 lb. Both metric and
household systems must be mastered .
9. 250 mL is equivalent to how many ounces?
, A) 6 oz
B) 7 oz
C) 8.3 oz
D) 10 oz
Rationale: 1 oz = 30 mL. 250 ÷ 30 = 8.33 oz, rounded to 8.3 oz.
Infusion intake calculations often require conversion between mL
and oz.
10. Convert 0.125 mg to mcg.
A) 1.25 mcg
B) 12.5 mcg
C) 125 mcg
D) 1250 mcg
Rationale: 1 mg = 1000 mcg. 0.125 × 1000 = 125 mcg. Digoxin
and levothyroxine are commonly prescribed in mcg doses.
SECTION 2: ORAL MEDICATIONS
11. Order: Metoprolol 50 mg PO daily. Available: 25 mg
tablets. How many tablets should be administered?
A) 0.5 tablet
B) 1 tablet
C) 2 tablets
D) 2.5 tablets
Q&A (2026/2027) | Nightingale College
100 Multiple Choice Questions with
Answers and Rationales
SECTION 1: METRIC CONVERSIONS & BASIC MATH
1. Convert 2.5 L to mL.
A) 25 mL
B) 250 mL
C) 2500 mL
D) 25,000 mL
Rationale: 1 L = 1000 mL. Multiply 2.5 × 1000 = 2500 mL. This is
a foundational metric conversion essential for all dosage
calculations .
2. Convert 0.25 mg to mcg.
A) 2.5 mcg
B) 25 mcg
C) 250 mcg
D) 2500 mcg
,Rationale: 1 mg = 1000 mcg. 0.25 × 1000 = 250 mcg. Accurate
conversion between mg and mcg is critical for medications with
narrow therapeutic ranges .
3. Convert 150 lb to kg (round to nearest tenth).
A) 60.0 kg
B) 65.2 kg
C) 68.2 kg
D) 72.0 kg
Rationale: 1 kg = 2.2 lb. 150 lb ÷ 2.2 = 68.18 kg, rounded to 68.2
kg. Weight-based dosing requires accurate lb to kg conversion .
4. A patient drinks 6 oz of juice. How many mL is this?
A) 120 mL
B) 150 mL
C) 180 mL
D) 240 mL
Rationale: 1 oz = 30 mL. 6 × 30 = 180 mL. Household-to-metric
conversions are commonly tested on the HESI exam .
5. Convert 0.05 g to mg.
A) 0.5 mg
B) 5 mg
C) 50 mg
D) 500 mg
Rationale: 1 g = 1000 mg. 0.05 × 1000 = 50 mg. Understanding
metric prefixes is essential for safe medication administration .
,6. How many mL are in 4 tablespoons?
A) 30 mL
B) 45 mL
C) 50 mL
D) 60 mL
Rationale: 1 tablespoon = 15 mL. 4 × 15 = 60 mL. Household
measurements appear in medication administration and
intake/output calculations.
7. Convert 2.2 mg to mcg.
A) 22 mcg
B) 220 mcg
C) 2200 mcg
D) 22,000 mcg
Rationale: 1 mg = 1000 mcg. 2.2 × 1000 = 2200 mcg.
Maintaining decimal place accuracy prevents medication errors .
8. Convert 75 kg to lb (round to nearest whole number).
A) 150 lb
B) 155 lb
C) 165 lb
D) 170 lb
Rationale: 1 kg = 2.2 lb. 75 × 2.2 = 165 lb. Both metric and
household systems must be mastered .
9. 250 mL is equivalent to how many ounces?
, A) 6 oz
B) 7 oz
C) 8.3 oz
D) 10 oz
Rationale: 1 oz = 30 mL. 250 ÷ 30 = 8.33 oz, rounded to 8.3 oz.
Infusion intake calculations often require conversion between mL
and oz.
10. Convert 0.125 mg to mcg.
A) 1.25 mcg
B) 12.5 mcg
C) 125 mcg
D) 1250 mcg
Rationale: 1 mg = 1000 mcg. 0.125 × 1000 = 125 mcg. Digoxin
and levothyroxine are commonly prescribed in mcg doses.
SECTION 2: ORAL MEDICATIONS
11. Order: Metoprolol 50 mg PO daily. Available: 25 mg
tablets. How many tablets should be administered?
A) 0.5 tablet
B) 1 tablet
C) 2 tablets
D) 2.5 tablets
