2026 ATI RN DOSAGE CALCULATION
PROCTORED ASSESSMENT QUESTIONS
AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
| INSTANT DOWNLOAD PDF
Core Domains
Basic Unit Conversions and Metric Equivalents
Oral Medication Dosage Calculations
Parenteral (Injectable) Medication Calculations
Intravenous Flow Rate and Infusion Calculations
Weight-Based Dosage Calculations
Powdered Medication Reconstitution
Pediatric and Geriatric Dose Adjustments
Critical Care Infusion Calculations
Introduction
The ATI RN Dosage Calculation Proctored Assessment is a comprehensive
examination designed to evaluate the nursing student’s proficiency in
medication dosage calculations and safe medication administration. The exam
assesses foundational mathematical principles, unit conversions, oral and
parenteral dosage calculations, intravenous flow rates, weight-based dosing,
and reconstitution of powdered medications. Multiple-choice and scenario-
based questions emphasize clinical application, accuracy, and patient safety.
Success demonstrates the competencies essential for safe medication
administration in professional nursing practice.
SECTION ONE: QUESTIONS 1–100
1. Convert 2.5 grams to milligrams.
,A. 25 mg
B. 250 mg
C. 2,500 mg
D. 25,000 mg
C. 2,500 mg
RATIONALE: To convert grams to milligrams, multiply by 1,000. 2.5 g ×
1,000 = 2,500 mg. Moving the decimal point three places to the right converts
grams to milligrams .
2. Convert 1,500 mL to liters.
A. 0.15 L
B. 1.5 L
C. 15 L
D. 150 L
B. 1.5 L
RATIONALE: To convert milliliters to liters, divide by 1,000. 1,500 mL ÷
1,000 = 1.5 L. Moving the decimal point three places to the left converts
milliliters to liters .
3. Convert 0.05 grams to micrograms.
A. 50 mcg
B. 500 mcg
C. 5,000 mcg
D. 50,000 mcg
D. 50,000 mcg
RATIONALE: 1 gram = 1,000,000 micrograms. 0.05 g × 1,000,000 = 50,000
mcg. Alternatively, 0.05 g = 50 mg = 50,000 mcg .
4. Convert 75 kg to pounds (1 kg = 2.2 lb).
,A. 34.1 lb
B. 150 lb
C. 165 lb
D. 75 lb
C. 165 lb
RATIONALE: 1 kg = 2.2 lb. To convert kg to lb, multiply by 2.2. 75 kg × 2.2
= 165 lb .
5. Convert 154 lb to kilograms (1 kg = 2.2 lb).
A. 70 kg
B. 77 kg
C. 154 kg
D. 340 kg
A. 70 kg
RATIONALE: To convert lb to kg, divide by 2.2. 154 lb ÷ 2.2 = 70 kg .
6. A nurse is preparing to administer amoxicillin 500 mg PO. Available
is amoxicillin oral suspension 250 mg/5 mL. How many mL should the
nurse administer per dose?
A. 5 mL
B. 10 mL
C. 12.5 mL
D. 15 mL
B. 10 mL
RATIONALE: Using the formula: (Desired dose ÷ Dose on hand) ×
Quantity = (500 mg ÷ 250 mg) × 5 mL = 2 × 5 mL = 10 mL .
7. A nurse is preparing to administer doxycycline 300 mg PO. Available
is doxycycline 150 mg capsules. How many capsules should the nurse
administer?
, A. 1 capsule
B. 2 capsules
C. 3 capsules
D. 4 capsules
B. 2 capsules
RATIONALE: Desired dose ÷ Dose per capsule = 300 mg ÷ 150 mg/capsule
= 2 capsules .
8. A nurse is preparing to administer digoxin 0.125 mg PO. Available is
digoxin 0.25 mg tablets. How many tablets should the nurse
administer?
A. 0.25 tablet
B. 0.5 tablet
C. 1 tablet
D. 1.5 tablets
B. 0.5 tablet
RATIONALE: Desired dose ÷ Dose per tablet = 0.125 mg ÷ 0.25 mg/tablet
= 0.5 tablet .
9. A nurse is preparing to administer 2,000 mcg of a medication.
Available is 1 mg tablets. How many tablets should the nurse
administer?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
B. 2 tablets
RATIONALE: Convert mcg to mg: 2,000 mcg ÷ 1,000 = 2 mg. Then 2 mg ÷
1 mg/tablet = 2 tablets .
PROCTORED ASSESSMENT QUESTIONS
AND CORRECT ANSWERS (VERIFIED
ANSWERS) PLUS RATIONALES 2026 Q&A
| INSTANT DOWNLOAD PDF
Core Domains
Basic Unit Conversions and Metric Equivalents
Oral Medication Dosage Calculations
Parenteral (Injectable) Medication Calculations
Intravenous Flow Rate and Infusion Calculations
Weight-Based Dosage Calculations
Powdered Medication Reconstitution
Pediatric and Geriatric Dose Adjustments
Critical Care Infusion Calculations
Introduction
The ATI RN Dosage Calculation Proctored Assessment is a comprehensive
examination designed to evaluate the nursing student’s proficiency in
medication dosage calculations and safe medication administration. The exam
assesses foundational mathematical principles, unit conversions, oral and
parenteral dosage calculations, intravenous flow rates, weight-based dosing,
and reconstitution of powdered medications. Multiple-choice and scenario-
based questions emphasize clinical application, accuracy, and patient safety.
Success demonstrates the competencies essential for safe medication
administration in professional nursing practice.
SECTION ONE: QUESTIONS 1–100
1. Convert 2.5 grams to milligrams.
,A. 25 mg
B. 250 mg
C. 2,500 mg
D. 25,000 mg
C. 2,500 mg
RATIONALE: To convert grams to milligrams, multiply by 1,000. 2.5 g ×
1,000 = 2,500 mg. Moving the decimal point three places to the right converts
grams to milligrams .
2. Convert 1,500 mL to liters.
A. 0.15 L
B. 1.5 L
C. 15 L
D. 150 L
B. 1.5 L
RATIONALE: To convert milliliters to liters, divide by 1,000. 1,500 mL ÷
1,000 = 1.5 L. Moving the decimal point three places to the left converts
milliliters to liters .
3. Convert 0.05 grams to micrograms.
A. 50 mcg
B. 500 mcg
C. 5,000 mcg
D. 50,000 mcg
D. 50,000 mcg
RATIONALE: 1 gram = 1,000,000 micrograms. 0.05 g × 1,000,000 = 50,000
mcg. Alternatively, 0.05 g = 50 mg = 50,000 mcg .
4. Convert 75 kg to pounds (1 kg = 2.2 lb).
,A. 34.1 lb
B. 150 lb
C. 165 lb
D. 75 lb
C. 165 lb
RATIONALE: 1 kg = 2.2 lb. To convert kg to lb, multiply by 2.2. 75 kg × 2.2
= 165 lb .
5. Convert 154 lb to kilograms (1 kg = 2.2 lb).
A. 70 kg
B. 77 kg
C. 154 kg
D. 340 kg
A. 70 kg
RATIONALE: To convert lb to kg, divide by 2.2. 154 lb ÷ 2.2 = 70 kg .
6. A nurse is preparing to administer amoxicillin 500 mg PO. Available
is amoxicillin oral suspension 250 mg/5 mL. How many mL should the
nurse administer per dose?
A. 5 mL
B. 10 mL
C. 12.5 mL
D. 15 mL
B. 10 mL
RATIONALE: Using the formula: (Desired dose ÷ Dose on hand) ×
Quantity = (500 mg ÷ 250 mg) × 5 mL = 2 × 5 mL = 10 mL .
7. A nurse is preparing to administer doxycycline 300 mg PO. Available
is doxycycline 150 mg capsules. How many capsules should the nurse
administer?
, A. 1 capsule
B. 2 capsules
C. 3 capsules
D. 4 capsules
B. 2 capsules
RATIONALE: Desired dose ÷ Dose per capsule = 300 mg ÷ 150 mg/capsule
= 2 capsules .
8. A nurse is preparing to administer digoxin 0.125 mg PO. Available is
digoxin 0.25 mg tablets. How many tablets should the nurse
administer?
A. 0.25 tablet
B. 0.5 tablet
C. 1 tablet
D. 1.5 tablets
B. 0.5 tablet
RATIONALE: Desired dose ÷ Dose per tablet = 0.125 mg ÷ 0.25 mg/tablet
= 0.5 tablet .
9. A nurse is preparing to administer 2,000 mcg of a medication.
Available is 1 mg tablets. How many tablets should the nurse
administer?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
B. 2 tablets
RATIONALE: Convert mcg to mg: 2,000 mcg ÷ 1,000 = 2 mg. Then 2 mg ÷
1 mg/tablet = 2 tablets .
