PHARMD | PHARMACY CALCULATIONS | 2026–2027 | ORIGINAL PRACTICE
PharmD Pharmacy Calculations
2026–2027 Practice Examination | 120 Original Calculation Questions & Worked Rationales
Report numerical answers to two decimal places unless the question explicitly specifies whole drops. Independent
arithmetic-focused pharmacy education. Not an official PharmD, NAPLEX, or university examination. Numeric
scenarios are hypothetical, not patient-specific medication orders. For real clinical care, confirm dosage,
appropriateness, protocols, product labeling, and institutional rounding rules.
Calculation Reference
• Tablets = prescribed amount ÷ amount per tablet.
• Volume (mL) = required amount ÷ concentration (amount/mL).
• Weight-based amount = mg/kg × weight in kg.
• Pump rate = total mL ÷ total hours.
• Gravity drip = (mL × drops/mL) ÷ minutes; round to a whole drop.
• Percent w/v = grams per 100 mL; percent w/w = grams per 100 g.
• Dilution: C1 × V1 = C2 × V2, using consistent units.
• Always check units, dimensional cancellation, and plausibility.
Section 1: Tablet quantities
Question 1. An educational prescription specifies 100 mg per dose. Tablets contain 25 mg each. How many
tablets provide one dose?
A. 8 tablets
B. 4 tablets
C. 2 tablets
D. 6 tablets
Correct Answer: B. 4 tablets
Detailed Rationale: 100 mg ÷ 25 mg/tablet = 4 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (8 tablets): This option differs from the computed result of 4 tablets
after rounding to two decimal places. C (2 tablets): This option differs from the computed result of 4 tablets
after rounding to two decimal places. D (6 tablets): This option differs from the computed result of 4 tablets
after rounding to two decimal places.
Question 2. An educational prescription specifies 125 mg per dose. Tablets contain 30 mg each. How many
tablets provide one dose?
A. 6.255 tablets
B. 8.34 tablets
C. 4.17 tablets
D. 2.085 tablets
Correct Answer: C. 4.17 tablets
Detailed Rationale: 125 mg ÷ 30 mg/tablet = 4.17 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (6.255 tablets): This option differs from the computed result of 4.17
tablets after rounding to two decimal places. B (8.34 tablets): This option differs from the computed result
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,PHARMD | PHARMACY CALCULATIONS | 2026–2027 | ORIGINAL PRACTICE
of 4.17 tablets after rounding to two decimal places. D (2.085 tablets): This option differs from the computed
result of 4.17 tablets after rounding to two decimal places.
Question 3. An educational prescription specifies 150 mg per dose. Tablets contain 35 mg each. How many
tablets provide one dose?
A. 2.145 tablets
B. 6.435 tablets
C. 8.58 tablets
D. 4.29 tablets
Correct Answer: D. 4.29 tablets
Detailed Rationale: 150 mg ÷ 35 mg/tablet = 4.29 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (2.145 tablets): This option differs from the computed result of 4.29
tablets after rounding to two decimal places. B (6.435 tablets): This option differs from the computed result
of 4.29 tablets after rounding to two decimal places. C (8.58 tablets): This option differs from the computed
result of 4.29 tablets after rounding to two decimal places.
Question 4. An educational prescription specifies 175 mg per dose. Tablets contain 40 mg each. How many
tablets provide one dose?
A. 4.38 tablets
B. 2.19 tablets
C. 6.57 tablets
D. 8.76 tablets
Correct Answer: A. 4.38 tablets
Detailed Rationale: 175 mg ÷ 40 mg/tablet = 4.38 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: B (2.19 tablets): This option differs from the computed result of 4.38
tablets after rounding to two decimal places. C (6.57 tablets): This option differs from the computed result
of 4.38 tablets after rounding to two decimal places. D (8.76 tablets): This option differs from the computed
result of 4.38 tablets after rounding to two decimal places.
Question 5. An educational prescription specifies 200 mg per dose. Tablets contain 45 mg each. How many
tablets provide one dose?
A. 8.88 tablets
B. 4.44 tablets
C. 2.22 tablets
D. 6.66 tablets
Correct Answer: B. 4.44 tablets
Detailed Rationale: 200 mg ÷ 45 mg/tablet = 4.44 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (8.88 tablets): This option differs from the computed result of 4.44
tablets after rounding to two decimal places. C (2.22 tablets): This option differs from the computed result
of 4.44 tablets after rounding to two decimal places. D (6.66 tablets): This option differs from the computed
result of 4.44 tablets after rounding to two decimal places.
Question 6. An educational prescription specifies 225 mg per dose. Tablets contain 50 mg each. How many
tablets provide one dose?
A. 6.75 tablets
B. 9 tablets
C. 4.5 tablets
D. 2.25 tablets
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,PHARMD | PHARMACY CALCULATIONS | 2026–2027 | ORIGINAL PRACTICE
Correct Answer: C. 4.5 tablets
Detailed Rationale: 225 mg ÷ 50 mg/tablet = 4.5 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (6.75 tablets): This option differs from the computed result of 4.5
tablets after rounding to two decimal places. B (9 tablets): This option differs from the computed result of
4.5 tablets after rounding to two decimal places. D (2.25 tablets): This option differs from the computed
result of 4.5 tablets after rounding to two decimal places.
Question 7. An educational prescription specifies 250 mg per dose. Tablets contain 55 mg each. How many
tablets provide one dose?
A. 2.275 tablets
B. 6.825 tablets
C. 9.1 tablets
D. 4.55 tablets
Correct Answer: D. 4.55 tablets
Detailed Rationale: 250 mg ÷ 55 mg/tablet = 4.55 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (2.275 tablets): This option differs from the computed result of 4.55
tablets after rounding to two decimal places. B (6.825 tablets): This option differs from the computed result
of 4.55 tablets after rounding to two decimal places. C (9.1 tablets): This option differs from the computed
result of 4.55 tablets after rounding to two decimal places.
Question 8. An educational prescription specifies 275 mg per dose. Tablets contain 60 mg each. How many
tablets provide one dose?
A. 4.58 tablets
B. 2.29 tablets
C. 6.87 tablets
D. 9.16 tablets
Correct Answer: A. 4.58 tablets
Detailed Rationale: 275 mg ÷ 60 mg/tablet = 4.58 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: B (2.29 tablets): This option differs from the computed result of 4.58
tablets after rounding to two decimal places. C (6.87 tablets): This option differs from the computed result
of 4.58 tablets after rounding to two decimal places. D (9.16 tablets): This option differs from the computed
result of 4.58 tablets after rounding to two decimal places.
Question 9. An educational prescription specifies 300 mg per dose. Tablets contain 65 mg each. How many
tablets provide one dose?
A. 9.24 tablets
B. 4.62 tablets
C. 2.31 tablets
D. 6.93 tablets
Correct Answer: B. 4.62 tablets
Detailed Rationale: 300 mg ÷ 65 mg/tablet = 4.62 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (9.24 tablets): This option differs from the computed result of 4.62
tablets after rounding to two decimal places. C (2.31 tablets): This option differs from the computed result
of 4.62 tablets after rounding to two decimal places. D (6.93 tablets): This option differs from the computed
result of 4.62 tablets after rounding to two decimal places.
Question 10. An educational prescription specifies 325 mg per dose. Tablets contain 70 mg each. How many
tablets provide one dose?
A. 6.96 tablets
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, PHARMD | PHARMACY CALCULATIONS | 2026–2027 | ORIGINAL PRACTICE
B. 9.28 tablets
C. 4.64 tablets
D. 2.32 tablets
Correct Answer: C. 4.64 tablets
Detailed Rationale: 325 mg ÷ 70 mg/tablet = 4.64 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (6.96 tablets): This option differs from the computed result of 4.64
tablets after rounding to two decimal places. B (9.28 tablets): This option differs from the computed result
of 4.64 tablets after rounding to two decimal places. D (2.32 tablets): This option differs from the computed
result of 4.64 tablets after rounding to two decimal places.
Section 2: Oral liquid volume
Question 11. A liquid contains 20 mg/mL. What volume delivers 120 mg?
A. 3 mL
B. 9 mL
C. 12 mL
D. 6 mL
Correct Answer: D. 6 mL
Detailed Rationale: 120 mg ÷ 20 mg/mL = 6 mL. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (3 mL): This option differs from the computed result of 6 mL after
rounding to two decimal places. B (9 mL): This option differs from the computed result of 6 mL after
rounding to two decimal places. C (12 mL): This option differs from the computed result of 6 mL after
rounding to two decimal places.
Question 12. A liquid contains 25 mg/mL. What volume delivers 150 mg?
A. 6 mL
B. 3 mL
C. 9 mL
D. 12 mL
Correct Answer: A. 6 mL
Detailed Rationale: 150 mg ÷ 25 mg/mL = 6 mL. Units cancel to give the requested result.
Why Other Options Are Incorrect: B (3 mL): This option differs from the computed result of 6 mL after
rounding to two decimal places. C (9 mL): This option differs from the computed result of 6 mL after
rounding to two decimal places. D (12 mL): This option differs from the computed result of 6 mL after
rounding to two decimal places.
Question 13. A liquid contains 30 mg/mL. What volume delivers 180 mg?
A. 12 mL
B. 6 mL
C. 3 mL
D. 9 mL
Correct Answer: B. 6 mL
Detailed Rationale: 180 mg ÷ 30 mg/mL = 6 mL. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (12 mL): This option differs from the computed result of 6 mL after
rounding to two decimal places. C (3 mL): This option differs from the computed result of 6 mL after
Independent educational material • Page 4
PharmD Pharmacy Calculations
2026–2027 Practice Examination | 120 Original Calculation Questions & Worked Rationales
Report numerical answers to two decimal places unless the question explicitly specifies whole drops. Independent
arithmetic-focused pharmacy education. Not an official PharmD, NAPLEX, or university examination. Numeric
scenarios are hypothetical, not patient-specific medication orders. For real clinical care, confirm dosage,
appropriateness, protocols, product labeling, and institutional rounding rules.
Calculation Reference
• Tablets = prescribed amount ÷ amount per tablet.
• Volume (mL) = required amount ÷ concentration (amount/mL).
• Weight-based amount = mg/kg × weight in kg.
• Pump rate = total mL ÷ total hours.
• Gravity drip = (mL × drops/mL) ÷ minutes; round to a whole drop.
• Percent w/v = grams per 100 mL; percent w/w = grams per 100 g.
• Dilution: C1 × V1 = C2 × V2, using consistent units.
• Always check units, dimensional cancellation, and plausibility.
Section 1: Tablet quantities
Question 1. An educational prescription specifies 100 mg per dose. Tablets contain 25 mg each. How many
tablets provide one dose?
A. 8 tablets
B. 4 tablets
C. 2 tablets
D. 6 tablets
Correct Answer: B. 4 tablets
Detailed Rationale: 100 mg ÷ 25 mg/tablet = 4 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (8 tablets): This option differs from the computed result of 4 tablets
after rounding to two decimal places. C (2 tablets): This option differs from the computed result of 4 tablets
after rounding to two decimal places. D (6 tablets): This option differs from the computed result of 4 tablets
after rounding to two decimal places.
Question 2. An educational prescription specifies 125 mg per dose. Tablets contain 30 mg each. How many
tablets provide one dose?
A. 6.255 tablets
B. 8.34 tablets
C. 4.17 tablets
D. 2.085 tablets
Correct Answer: C. 4.17 tablets
Detailed Rationale: 125 mg ÷ 30 mg/tablet = 4.17 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (6.255 tablets): This option differs from the computed result of 4.17
tablets after rounding to two decimal places. B (8.34 tablets): This option differs from the computed result
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,PHARMD | PHARMACY CALCULATIONS | 2026–2027 | ORIGINAL PRACTICE
of 4.17 tablets after rounding to two decimal places. D (2.085 tablets): This option differs from the computed
result of 4.17 tablets after rounding to two decimal places.
Question 3. An educational prescription specifies 150 mg per dose. Tablets contain 35 mg each. How many
tablets provide one dose?
A. 2.145 tablets
B. 6.435 tablets
C. 8.58 tablets
D. 4.29 tablets
Correct Answer: D. 4.29 tablets
Detailed Rationale: 150 mg ÷ 35 mg/tablet = 4.29 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (2.145 tablets): This option differs from the computed result of 4.29
tablets after rounding to two decimal places. B (6.435 tablets): This option differs from the computed result
of 4.29 tablets after rounding to two decimal places. C (8.58 tablets): This option differs from the computed
result of 4.29 tablets after rounding to two decimal places.
Question 4. An educational prescription specifies 175 mg per dose. Tablets contain 40 mg each. How many
tablets provide one dose?
A. 4.38 tablets
B. 2.19 tablets
C. 6.57 tablets
D. 8.76 tablets
Correct Answer: A. 4.38 tablets
Detailed Rationale: 175 mg ÷ 40 mg/tablet = 4.38 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: B (2.19 tablets): This option differs from the computed result of 4.38
tablets after rounding to two decimal places. C (6.57 tablets): This option differs from the computed result
of 4.38 tablets after rounding to two decimal places. D (8.76 tablets): This option differs from the computed
result of 4.38 tablets after rounding to two decimal places.
Question 5. An educational prescription specifies 200 mg per dose. Tablets contain 45 mg each. How many
tablets provide one dose?
A. 8.88 tablets
B. 4.44 tablets
C. 2.22 tablets
D. 6.66 tablets
Correct Answer: B. 4.44 tablets
Detailed Rationale: 200 mg ÷ 45 mg/tablet = 4.44 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (8.88 tablets): This option differs from the computed result of 4.44
tablets after rounding to two decimal places. C (2.22 tablets): This option differs from the computed result
of 4.44 tablets after rounding to two decimal places. D (6.66 tablets): This option differs from the computed
result of 4.44 tablets after rounding to two decimal places.
Question 6. An educational prescription specifies 225 mg per dose. Tablets contain 50 mg each. How many
tablets provide one dose?
A. 6.75 tablets
B. 9 tablets
C. 4.5 tablets
D. 2.25 tablets
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,PHARMD | PHARMACY CALCULATIONS | 2026–2027 | ORIGINAL PRACTICE
Correct Answer: C. 4.5 tablets
Detailed Rationale: 225 mg ÷ 50 mg/tablet = 4.5 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (6.75 tablets): This option differs from the computed result of 4.5
tablets after rounding to two decimal places. B (9 tablets): This option differs from the computed result of
4.5 tablets after rounding to two decimal places. D (2.25 tablets): This option differs from the computed
result of 4.5 tablets after rounding to two decimal places.
Question 7. An educational prescription specifies 250 mg per dose. Tablets contain 55 mg each. How many
tablets provide one dose?
A. 2.275 tablets
B. 6.825 tablets
C. 9.1 tablets
D. 4.55 tablets
Correct Answer: D. 4.55 tablets
Detailed Rationale: 250 mg ÷ 55 mg/tablet = 4.55 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (2.275 tablets): This option differs from the computed result of 4.55
tablets after rounding to two decimal places. B (6.825 tablets): This option differs from the computed result
of 4.55 tablets after rounding to two decimal places. C (9.1 tablets): This option differs from the computed
result of 4.55 tablets after rounding to two decimal places.
Question 8. An educational prescription specifies 275 mg per dose. Tablets contain 60 mg each. How many
tablets provide one dose?
A. 4.58 tablets
B. 2.29 tablets
C. 6.87 tablets
D. 9.16 tablets
Correct Answer: A. 4.58 tablets
Detailed Rationale: 275 mg ÷ 60 mg/tablet = 4.58 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: B (2.29 tablets): This option differs from the computed result of 4.58
tablets after rounding to two decimal places. C (6.87 tablets): This option differs from the computed result
of 4.58 tablets after rounding to two decimal places. D (9.16 tablets): This option differs from the computed
result of 4.58 tablets after rounding to two decimal places.
Question 9. An educational prescription specifies 300 mg per dose. Tablets contain 65 mg each. How many
tablets provide one dose?
A. 9.24 tablets
B. 4.62 tablets
C. 2.31 tablets
D. 6.93 tablets
Correct Answer: B. 4.62 tablets
Detailed Rationale: 300 mg ÷ 65 mg/tablet = 4.62 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (9.24 tablets): This option differs from the computed result of 4.62
tablets after rounding to two decimal places. C (2.31 tablets): This option differs from the computed result
of 4.62 tablets after rounding to two decimal places. D (6.93 tablets): This option differs from the computed
result of 4.62 tablets after rounding to two decimal places.
Question 10. An educational prescription specifies 325 mg per dose. Tablets contain 70 mg each. How many
tablets provide one dose?
A. 6.96 tablets
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, PHARMD | PHARMACY CALCULATIONS | 2026–2027 | ORIGINAL PRACTICE
B. 9.28 tablets
C. 4.64 tablets
D. 2.32 tablets
Correct Answer: C. 4.64 tablets
Detailed Rationale: 325 mg ÷ 70 mg/tablet = 4.64 tablets. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (6.96 tablets): This option differs from the computed result of 4.64
tablets after rounding to two decimal places. B (9.28 tablets): This option differs from the computed result
of 4.64 tablets after rounding to two decimal places. D (2.32 tablets): This option differs from the computed
result of 4.64 tablets after rounding to two decimal places.
Section 2: Oral liquid volume
Question 11. A liquid contains 20 mg/mL. What volume delivers 120 mg?
A. 3 mL
B. 9 mL
C. 12 mL
D. 6 mL
Correct Answer: D. 6 mL
Detailed Rationale: 120 mg ÷ 20 mg/mL = 6 mL. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (3 mL): This option differs from the computed result of 6 mL after
rounding to two decimal places. B (9 mL): This option differs from the computed result of 6 mL after
rounding to two decimal places. C (12 mL): This option differs from the computed result of 6 mL after
rounding to two decimal places.
Question 12. A liquid contains 25 mg/mL. What volume delivers 150 mg?
A. 6 mL
B. 3 mL
C. 9 mL
D. 12 mL
Correct Answer: A. 6 mL
Detailed Rationale: 150 mg ÷ 25 mg/mL = 6 mL. Units cancel to give the requested result.
Why Other Options Are Incorrect: B (3 mL): This option differs from the computed result of 6 mL after
rounding to two decimal places. C (9 mL): This option differs from the computed result of 6 mL after
rounding to two decimal places. D (12 mL): This option differs from the computed result of 6 mL after
rounding to two decimal places.
Question 13. A liquid contains 30 mg/mL. What volume delivers 180 mg?
A. 12 mL
B. 6 mL
C. 3 mL
D. 9 mL
Correct Answer: B. 6 mL
Detailed Rationale: 180 mg ÷ 30 mg/mL = 6 mL. Units cancel to give the requested result.
Why Other Options Are Incorrect: A (12 mL): This option differs from the computed result of 6 mL after
rounding to two decimal places. C (3 mL): This option differs from the computed result of 6 mL after
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