ATI Basic Dosage
Calculations: Comprehensive
Advanced Practice
Examination - Version 2.0
well written one year 2025
/2026 updated graded A+
Examination Title: ATI Basic Dosage Calculations: Advanced Clinical Competency Assessment for
Nursing Practice and Medication Administration Safety - Version 2.0
Difficulty Level: Advanced / Mixed (Progressing from foundational to complex clinical application)
,Target Audience: Nursing students preparing for ATI dosage calculation competency examinations,
RN candidates, and practicing nurses seeking to enhance medication calculation proficiency Total
Questions: 150
Instructions: Select the single best answer for each question. Round answers according to standard
ATI rounding rules: use a leading zero for decimal values less than 1, do not use trailing zeros, and
round to the nearest tenth unless otherwise specified.
SECTION 1: Unit Conversions and Basic Mathematics (Questions 1–15)
1. A nurse is converting a client's weight of 275 lb to kilograms. What is the client's weight in
kilograms? (Round to the nearest tenth.)
A. 121.5 kg
B. 122.7 kg
C. 125.0 kg
D. 126.5 kg
- detailed answer 100 % correct :-C
Rationale: 275 lb ÷ 2.2 = 125.0 kg. The weight divided by the conversion factor (2.2) yields 125 kg
exactly.
2. A medication order is for 0.25 g. The medication is available in 125 mg tablets. How many
tablets should the nurse administer?
A. 0.5 tablet
B. 1 tablet
C. 1.5 tablets
D. 2 tablets
- detailed answer 100 % correct :-D
Rationale: Convert 0.25 g to mg: 0.25 g × 1000 mg/g = 250 mg. Divide by available dose: 250 mg ÷
125 mg/tablet = 2 tablets.
,3. A nurse needs to administer 1.2 L of fluid over 24 hours. How many mL per hour should the
IV pump be set to?
A. 40 mL/hr
B. 45 mL/hr
C. 50 mL/hr
D. 55 mL/hr
- detailed answer 100 % correct :-C
Rationale: Convert 1.2 L to mL: 1.2 L × 1000 mL/L = 1,200 mL. Calculate hourly rate: 1,200 mL ÷ 24 hr
= 50 mL/hr.
4. A client's total intake includes 2 cups of coffee, 1 cup of milk, 12 oz of juice, and 8 oz of
broth. What is the total intake in mL?
A. 1,020 mL
B. 1,080 mL
C. 1,140 mL
D. 1,200 mL
- detailed answer 100 % correct :-D
Rationale: Convert cups to ounces: 2 cups = 16 oz, 1 cup = 8 oz. Total ounces = 16 + 8 + 12 + 8 = 44
oz. 44 oz × 30 mL/oz = 1,320 mL.
5. A nurse is calculating a dosage and needs to convert 3.5 mg to mcg. How many mcg are in
3.5 mg?
A. 350 mcg
B. 3,500 mcg
C. 35,000 mcg
D. 350,000 mcg
- detailed answer 100 % correct :-B
Rationale: 1 mg = 1,000 mcg. Therefore, 3.5 mg × 1,000 mcg/mg = 3,500 mcg.
, 6. A medication label reads 0.5 mg/mL. How many mcg are in 2 mL?
A. 500 mcg
B. 750 mcg
C. 1,000 mcg
D. 1,500 mcg
- detailed answer 100 % correct :-C
Rationale: Concentration = 0.5 mg/mL = 500 mcg/mL. In 2 mL: 500 mcg/mL × 2 mL = 1,000 mcg.
7. A client weighs 154 lb. What is the client's weight in kilograms?
A. 68 kg
B. 70 kg
C. 72 kg
D. 75 kg
- detailed answer 100 % correct :-B
Rationale: 154 lb ÷ 2.2 = 70 kg.
8. A prescription is written for 0.75 mg of a medication. The medication is available in 0.25 mg
tablets. How many tablets should the nurse administer?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
- detailed answer 100 % correct :-C
Rationale: 0.75 mg ÷ 0.25 mg/tablet = 3 tablets.
9. A nurse is converting a child's weight of 22 lb 4 oz to kilograms. What is the weight in
kilograms?
(Round to the nearest tenth.)
A. 9.8 kg
Calculations: Comprehensive
Advanced Practice
Examination - Version 2.0
well written one year 2025
/2026 updated graded A+
Examination Title: ATI Basic Dosage Calculations: Advanced Clinical Competency Assessment for
Nursing Practice and Medication Administration Safety - Version 2.0
Difficulty Level: Advanced / Mixed (Progressing from foundational to complex clinical application)
,Target Audience: Nursing students preparing for ATI dosage calculation competency examinations,
RN candidates, and practicing nurses seeking to enhance medication calculation proficiency Total
Questions: 150
Instructions: Select the single best answer for each question. Round answers according to standard
ATI rounding rules: use a leading zero for decimal values less than 1, do not use trailing zeros, and
round to the nearest tenth unless otherwise specified.
SECTION 1: Unit Conversions and Basic Mathematics (Questions 1–15)
1. A nurse is converting a client's weight of 275 lb to kilograms. What is the client's weight in
kilograms? (Round to the nearest tenth.)
A. 121.5 kg
B. 122.7 kg
C. 125.0 kg
D. 126.5 kg
- detailed answer 100 % correct :-C
Rationale: 275 lb ÷ 2.2 = 125.0 kg. The weight divided by the conversion factor (2.2) yields 125 kg
exactly.
2. A medication order is for 0.25 g. The medication is available in 125 mg tablets. How many
tablets should the nurse administer?
A. 0.5 tablet
B. 1 tablet
C. 1.5 tablets
D. 2 tablets
- detailed answer 100 % correct :-D
Rationale: Convert 0.25 g to mg: 0.25 g × 1000 mg/g = 250 mg. Divide by available dose: 250 mg ÷
125 mg/tablet = 2 tablets.
,3. A nurse needs to administer 1.2 L of fluid over 24 hours. How many mL per hour should the
IV pump be set to?
A. 40 mL/hr
B. 45 mL/hr
C. 50 mL/hr
D. 55 mL/hr
- detailed answer 100 % correct :-C
Rationale: Convert 1.2 L to mL: 1.2 L × 1000 mL/L = 1,200 mL. Calculate hourly rate: 1,200 mL ÷ 24 hr
= 50 mL/hr.
4. A client's total intake includes 2 cups of coffee, 1 cup of milk, 12 oz of juice, and 8 oz of
broth. What is the total intake in mL?
A. 1,020 mL
B. 1,080 mL
C. 1,140 mL
D. 1,200 mL
- detailed answer 100 % correct :-D
Rationale: Convert cups to ounces: 2 cups = 16 oz, 1 cup = 8 oz. Total ounces = 16 + 8 + 12 + 8 = 44
oz. 44 oz × 30 mL/oz = 1,320 mL.
5. A nurse is calculating a dosage and needs to convert 3.5 mg to mcg. How many mcg are in
3.5 mg?
A. 350 mcg
B. 3,500 mcg
C. 35,000 mcg
D. 350,000 mcg
- detailed answer 100 % correct :-B
Rationale: 1 mg = 1,000 mcg. Therefore, 3.5 mg × 1,000 mcg/mg = 3,500 mcg.
, 6. A medication label reads 0.5 mg/mL. How many mcg are in 2 mL?
A. 500 mcg
B. 750 mcg
C. 1,000 mcg
D. 1,500 mcg
- detailed answer 100 % correct :-C
Rationale: Concentration = 0.5 mg/mL = 500 mcg/mL. In 2 mL: 500 mcg/mL × 2 mL = 1,000 mcg.
7. A client weighs 154 lb. What is the client's weight in kilograms?
A. 68 kg
B. 70 kg
C. 72 kg
D. 75 kg
- detailed answer 100 % correct :-B
Rationale: 154 lb ÷ 2.2 = 70 kg.
8. A prescription is written for 0.75 mg of a medication. The medication is available in 0.25 mg
tablets. How many tablets should the nurse administer?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
- detailed answer 100 % correct :-C
Rationale: 0.75 mg ÷ 0.25 mg/tablet = 3 tablets.
9. A nurse is converting a child's weight of 22 lb 4 oz to kilograms. What is the weight in
kilograms?
(Round to the nearest tenth.)
A. 9.8 kg
