1
ATI RN DOSAGE CALCULATIONS Actual
Exam 2026/2027: QUESTIONS AND ANSWERS
(100% CORRECT) for Nursing Success – Pass
Guaranteed - A+ Graded
Section 1: Oral Medications (Tablets/Capsules)
Q1
The provider orders digoxin 0.25 mg PO daily. The medication is available in 0.125 mg tablets.
How many tablets should the nurse administer? (Round to the nearest whole tablet)
A. 0.5 tablet
B. 1 tablet
C. 1.5 tablets
D. 2 tablets
Correct Answer: D. 2 tablets
Rationale:
• Formula: Desired dose ÷ Dose on hand = Number of tablets
• Calculation: 0.25 mg ÷ 0.125 mg = 2 tablets
• Verification: 2 tablets × 0.125 mg = 0.25 mg (correct ordered dose)
• Rounding: Tablets are typically rounded to the nearest whole tablet for safety. The nurse
should administer 2 tablets.
Q2
The provider orders levothyroxine 150 mcg PO daily. The pharmacy supplies 0.075 mg tablets.
How many tablets should the nurse administer? (Round to the nearest whole tablet)
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct Answer: B. 2 tablets
,2
Rationale:
• Step 1 - Convert units: 0.075 mg = 75 mcg (move decimal 3 places right)
• Formula: Desired dose ÷ Dose on hand = Number of tablets
• Calculation: 150 mcg ÷ 75 mcg = 2 tablets
• Verification: 2 tablets × 75 mcg = 150 mcg (correct ordered dose)
• Common error: If nurse forgets to convert mg to mcg: 150 ÷ 0.075 = 2,000 (incorrect
and dangerous)
Q3
The provider orders metoprolol 50 mg PO twice daily. The medication is available as 25 mg
tablets. How many tablets should the nurse administer per dose? (Round to the nearest whole
tablet)
A. 0.5 tablet
B. 1 tablet
C. 1.5 tablets
D. 2 tablets
Correct Answer: D. 2 tablets
Rationale:
• Formula: Desired dose ÷ Dose on hand = Number of tablets
• Calculation: 50 mg ÷ 25 mg = 2 tablets
• Verification: 2 tablets × 25 mg = 50 mg (correct ordered dose)
• Note: The "twice daily" frequency does not affect the per-dose calculation. Each dose
requires 2 tablets.
Q4
The provider orders warfarin 2.5 mg PO daily. The medication is available as 5 mg scored
tablets. How many tablets should the nurse administer? (Round to the nearest half tablet)
A. 0.25 tablet
B. 0.5 tablet
C. 1 tablet
D. 1.5 tablets
, 3
Correct Answer: B. 0.5 tablet
Rationale:
• Formula: Desired dose ÷ Dose on hand = Number of tablets
• Calculation: 2.5 mg ÷ 5 mg = 0.5 tablet
• Verification: 0.5 tablet × 5 mg = 2.5 mg (correct ordered dose)
• Rounding: Scored tablets may be split in half for accurate dosing. The nurse should
administer ½ tablet (0.5 tablet). Never split unscored tablets.
Q5
The provider orders carbamazepine 0.4 g PO three times daily. The medication is available as
200 mg tablets. How many tablets should the nurse administer per dose? (Round to the nearest
whole tablet)
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct Answer: B. 2 tablets
Rationale:
• Step 1 - Convert units: 0.4 g = 400 mg (move decimal 3 places right)
• Formula: Desired dose ÷ Dose on hand = Number of tablets
• Calculation: 400 mg ÷ 200 mg = 2 tablets
• Verification: 2 tablets × 200 mg = 400 mg = 0.4 g (correct ordered dose)
• Note: "Three times daily" indicates frequency only; per-dose calculation remains 2
tablets.
Section 2: Oral Liquids
Q6
The provider orders amoxicillin 400 mg PO every 8 hours. The medication is available as
amoxicillin suspension 250 mg/5 mL. How many mL should the nurse administer per dose?
(Round to the nearest tenth)
ATI RN DOSAGE CALCULATIONS Actual
Exam 2026/2027: QUESTIONS AND ANSWERS
(100% CORRECT) for Nursing Success – Pass
Guaranteed - A+ Graded
Section 1: Oral Medications (Tablets/Capsules)
Q1
The provider orders digoxin 0.25 mg PO daily. The medication is available in 0.125 mg tablets.
How many tablets should the nurse administer? (Round to the nearest whole tablet)
A. 0.5 tablet
B. 1 tablet
C. 1.5 tablets
D. 2 tablets
Correct Answer: D. 2 tablets
Rationale:
• Formula: Desired dose ÷ Dose on hand = Number of tablets
• Calculation: 0.25 mg ÷ 0.125 mg = 2 tablets
• Verification: 2 tablets × 0.125 mg = 0.25 mg (correct ordered dose)
• Rounding: Tablets are typically rounded to the nearest whole tablet for safety. The nurse
should administer 2 tablets.
Q2
The provider orders levothyroxine 150 mcg PO daily. The pharmacy supplies 0.075 mg tablets.
How many tablets should the nurse administer? (Round to the nearest whole tablet)
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct Answer: B. 2 tablets
,2
Rationale:
• Step 1 - Convert units: 0.075 mg = 75 mcg (move decimal 3 places right)
• Formula: Desired dose ÷ Dose on hand = Number of tablets
• Calculation: 150 mcg ÷ 75 mcg = 2 tablets
• Verification: 2 tablets × 75 mcg = 150 mcg (correct ordered dose)
• Common error: If nurse forgets to convert mg to mcg: 150 ÷ 0.075 = 2,000 (incorrect
and dangerous)
Q3
The provider orders metoprolol 50 mg PO twice daily. The medication is available as 25 mg
tablets. How many tablets should the nurse administer per dose? (Round to the nearest whole
tablet)
A. 0.5 tablet
B. 1 tablet
C. 1.5 tablets
D. 2 tablets
Correct Answer: D. 2 tablets
Rationale:
• Formula: Desired dose ÷ Dose on hand = Number of tablets
• Calculation: 50 mg ÷ 25 mg = 2 tablets
• Verification: 2 tablets × 25 mg = 50 mg (correct ordered dose)
• Note: The "twice daily" frequency does not affect the per-dose calculation. Each dose
requires 2 tablets.
Q4
The provider orders warfarin 2.5 mg PO daily. The medication is available as 5 mg scored
tablets. How many tablets should the nurse administer? (Round to the nearest half tablet)
A. 0.25 tablet
B. 0.5 tablet
C. 1 tablet
D. 1.5 tablets
, 3
Correct Answer: B. 0.5 tablet
Rationale:
• Formula: Desired dose ÷ Dose on hand = Number of tablets
• Calculation: 2.5 mg ÷ 5 mg = 0.5 tablet
• Verification: 0.5 tablet × 5 mg = 2.5 mg (correct ordered dose)
• Rounding: Scored tablets may be split in half for accurate dosing. The nurse should
administer ½ tablet (0.5 tablet). Never split unscored tablets.
Q5
The provider orders carbamazepine 0.4 g PO three times daily. The medication is available as
200 mg tablets. How many tablets should the nurse administer per dose? (Round to the nearest
whole tablet)
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct Answer: B. 2 tablets
Rationale:
• Step 1 - Convert units: 0.4 g = 400 mg (move decimal 3 places right)
• Formula: Desired dose ÷ Dose on hand = Number of tablets
• Calculation: 400 mg ÷ 200 mg = 2 tablets
• Verification: 2 tablets × 200 mg = 400 mg = 0.4 g (correct ordered dose)
• Note: "Three times daily" indicates frequency only; per-dose calculation remains 2
tablets.
Section 2: Oral Liquids
Q6
The provider orders amoxicillin 400 mg PO every 8 hours. The medication is available as
amoxicillin suspension 250 mg/5 mL. How many mL should the nurse administer per dose?
(Round to the nearest tenth)
