Test Bank for Henke’s Med-Math: Dosage Calculation,
Preparation & Administration (10th Edition) by Susan
Buchholz | All Chapters 1-10 Complete Verified MCQs
with Detailed Answers & Rationales | Updated
Newest Version 2025/2026 A+ Graded
Boost your grades with the ultimate 2025/2026 Test Bank for Henke’s Med-
Math: Dosage Calculation, Preparation & Administration (10th Edition) by
Susan Buchholz. This comprehensive resource features verified MCQs
covering all chapters 1 to 10. Each question includes bolded correct answers
and in-depth clinical rationales to master oral, parenteral, pediatric dosing, and
critical care IV drip calculations. Perfect for nursing students prepping for
exams and safe clinical practice.
1. A patient is prescribed 0.5 g of a medication. The stock vial contains 250 mg per
tablet. How many tablets will the nurse administer?
A) 0.5 tablet
B) 1 tablet
C) 2 tablets
D) 3 tablets
• Rationale: Convert grams to milligrams: 0.5 g × 1,000 = 500 mg. Use the formula
(Desired / Have) × Quantity: (500 mg / 250 mg) × 1 tablet = 2 tablets.
2. A physician orders 1.5 liters of normal saline to run over 12 hours. How many
milliliters (mL) will the patient receive in total?
A) 150 mL
B) 1,200 mL
C) 1,500 mL
D) 15,000 mL
• Rationale: To convert liters to milliliters, multiply by 1,000. 1.5 L × 1,000 = 1,500 mL.
3. A prescription requires 2 fluid ounces of a liquid antacid. How many milliliters (mL)
should the nurse measure out?
A) 30 mL
B) 45 mL
C) 60 mL
D) 90 mL
• Rationale: One fluid ounce is equal to 30 mL. Therefore, 2 ounces × 30 mL/ounce =
60 mL.
4. A infant weighs 8.8 pounds. What is the infant's weight in kilograms (kg)?
A) 2 kg
B) 4 kg
, C) 17.6 kg
D) 19.3 kg
• Rationale: Convert pounds to kilograms by dividing by 2.2. 8.8 lbs / 2.2 = 4 kg.
5. A medication order states to administer 45 mg of a drug. The available stock vial is
labeled 15 mg/mL. How many milliliters will the nurse draw up?
A) 1.5 mL
B) 2 mL
C) 3 mL
D) 4.5 mL
• Rationale: Using the dosage formula: (Desired / Have) × Quantity = (45 mg / 15 mg)
× 1 mL = 3 mL.
6. The nurse needs to give 0.075 mg of synthroid. The pharmacy supplies tablets
labeled 75 mcg. How many tablets should be given?
A) 0.5 tablet
B) 1 tablet
C) 1.5 tablets
D) 2 tablets
• Rationale: Convert milligrams to micrograms: 0.075 mg × 1,000 = 75 mcg. The dose
ordered matches the dose on hand, which equals 1 tablet.
7. A patient is instructed to take 2 teaspoons of cough syrup at home. How many
milliliters (mL) is this equivalent to?
A) 5 mL
B) 10 mL
C) 15 mL
D) 30 mL
• Rationale: One teaspoon (tsp) is equal to 5 mL. Therefore, 2 teaspoons × 5 mL = 10
mL.
8. Reduce the fraction 24/36 to its lowest terms.
A) 1/2
B) 3/4
C) 2/3
D) 5/6
• Rationale: Divide both the numerator and the denominator by their greatest
common divisor, which is 12. = 2 and = 3, yielding 2/3.
9. Convert the fraction 3/8 into a decimal.
A) 0.3
B) 0.35
C) 0.375
D) 0.38
• Rationale: Divide 3 by 8 to get the decimal equivalent, which equals 0.375.
10. A medication container has 0.125 g capsules. The provider orders 250 mg. How
many capsules will the nurse provide?
A) 1 capsule
B) 2 capsules
C) 3 capsules
D) 4 capsules
• Rationale: Convert 0.125 g to milligrams: 0.125 × 1,000 = 125 mg. (250 mg desired
/ 125 mg have) = 2 capsules.
11. Change the ratio 1:200 into a percentage.
A) 0.05%
, B) 0.5%
C) 5%
D) 50%
• Rationale: A ratio of 1:200 means 1 divided by 200, which equals 0.005. To convert
a decimal to a percentage, multiply by 100, which equals 0.5%.
12. A patient drank 8 ounces of water, 4 ounces of juice, and 6 ounces of gelatin. What
is the total fluid intake in milliliters (mL)?
A) 360 mL
B) 480 mL
C) 540 mL
D) 600 mL
• Rationale: Total ounces = 8 + 4 + 6 = 18 ounces. Convert ounces to mL by
multiplying by 30: 18 × 30 = 540 mL.
13. Convert 220 pounds to kilograms (kg).
A) 50 kg
B) 100 kg
C) 110 kg
D) 440 kg
• Rationale: Divide the weight in pounds by 2.2 to find kilograms. .2 = 100 kg.
14. Order: 1 tablespoon of medication twice a day. How many milliliters (mL) will the
patient take per dose?
A) 5 mL
B) 10 mL
C) 15 mL
D) 30 mL
• Rationale: One tablespoon (tbsp) is equivalent to 15 mL. The question asks for the
amount per single dose, which is 15 mL.
15. Solve for X: 4 : 12 :: X : 36.
A) 6
B) 9
C) 12
D) 18
• Rationale: In a proportion, multiply the extremes and the means: 12 × X = 4 × 36;
12X = 144; X = = 12.
16. Convert 450 micrograms (mcg) to milligrams (mg).
A) 0.045 mg
B) 0.45 mg
C) 4.5 mg
D) 45 mg
• Rationale: To convert micrograms to milligrams, divide by 1,000. ,000 = 0.45
mg.
17. A liquid medication vial reads 250 mcg/2 mL. The order is for 0.5 mg. How many mL
do you administer?
A) 1 mL
B) 2 mL
C) 3 mL
D) 4 mL
• Rationale: Convert 0.5 mg to mcg: 0.5 × 1,000 = 500 mcg. (500 mcg / 250 mcg) × 2
mL = 2 × 2 mL = 4 mL.
, 18. What is the equivalent of 39.4°C in Fahrenheit (°F)?
A) 101.1°F
B) 102.9°F
C) 103.5°F
D) 104.2°F
• Rationale: Use the formula (°C × 1.8) + 32. (39.4 × 1.8) + 32 = 70.92 + 32 =
102.92°F.
19. Convert 98.6°F to Celsius (°C).
A) 36°C
B) 37°C
C) 38°C
D) 39°C
• Rationale: Use the formula (°F - 32) / 1.8. (98.6 - 32) / 1.8 = 66..8 = 37°C.
20. A solution contains 5 grams of dextrose per 100 mL. What is the percentage strength
of this solution?
A) 0.5%
B) 1%
C) 5%
D) 50%
• Rationale: Percentage strength indicates grams of solute per 100 mL of fluid.
Therefore, 5 g per 100 mL is a 5% solution.
Oral & Parenteral Dosages (Chapters 4–5)
21. Order: Carvedilol 12.5 mg PO. Available: 6.25 mg tablets. How many tablets will the
nurse give?
A) 0.5 tablet
B) 1 tablet
C) 1.5 tablets
D) 2 tablets
• Rationale: (Desired / Have) = 12.5 mg / 6.25 mg = 2 tablets.
22. Order: Amoxicillin 500 mg PO. Available: Oral suspension 250 mg/5 mL. How many
mL are needed?
A) 2.5 mL
B) 5 mL
C) 10 mL
D) 20 mL
• Rationale: (Desired / Have) × Volume = () × 5 mL = 2 × 5 mL = 10 mL.
23. Order: Digoxin 0.125 mg PO. Available: 0.25 mg scored tablets. How many tablets
will be administered?
A) 0.5 tablet
B) 1 tablet
C) 1.5 tablets
D) 2 tablets
Preparation & Administration (10th Edition) by Susan
Buchholz | All Chapters 1-10 Complete Verified MCQs
with Detailed Answers & Rationales | Updated
Newest Version 2025/2026 A+ Graded
Boost your grades with the ultimate 2025/2026 Test Bank for Henke’s Med-
Math: Dosage Calculation, Preparation & Administration (10th Edition) by
Susan Buchholz. This comprehensive resource features verified MCQs
covering all chapters 1 to 10. Each question includes bolded correct answers
and in-depth clinical rationales to master oral, parenteral, pediatric dosing, and
critical care IV drip calculations. Perfect for nursing students prepping for
exams and safe clinical practice.
1. A patient is prescribed 0.5 g of a medication. The stock vial contains 250 mg per
tablet. How many tablets will the nurse administer?
A) 0.5 tablet
B) 1 tablet
C) 2 tablets
D) 3 tablets
• Rationale: Convert grams to milligrams: 0.5 g × 1,000 = 500 mg. Use the formula
(Desired / Have) × Quantity: (500 mg / 250 mg) × 1 tablet = 2 tablets.
2. A physician orders 1.5 liters of normal saline to run over 12 hours. How many
milliliters (mL) will the patient receive in total?
A) 150 mL
B) 1,200 mL
C) 1,500 mL
D) 15,000 mL
• Rationale: To convert liters to milliliters, multiply by 1,000. 1.5 L × 1,000 = 1,500 mL.
3. A prescription requires 2 fluid ounces of a liquid antacid. How many milliliters (mL)
should the nurse measure out?
A) 30 mL
B) 45 mL
C) 60 mL
D) 90 mL
• Rationale: One fluid ounce is equal to 30 mL. Therefore, 2 ounces × 30 mL/ounce =
60 mL.
4. A infant weighs 8.8 pounds. What is the infant's weight in kilograms (kg)?
A) 2 kg
B) 4 kg
, C) 17.6 kg
D) 19.3 kg
• Rationale: Convert pounds to kilograms by dividing by 2.2. 8.8 lbs / 2.2 = 4 kg.
5. A medication order states to administer 45 mg of a drug. The available stock vial is
labeled 15 mg/mL. How many milliliters will the nurse draw up?
A) 1.5 mL
B) 2 mL
C) 3 mL
D) 4.5 mL
• Rationale: Using the dosage formula: (Desired / Have) × Quantity = (45 mg / 15 mg)
× 1 mL = 3 mL.
6. The nurse needs to give 0.075 mg of synthroid. The pharmacy supplies tablets
labeled 75 mcg. How many tablets should be given?
A) 0.5 tablet
B) 1 tablet
C) 1.5 tablets
D) 2 tablets
• Rationale: Convert milligrams to micrograms: 0.075 mg × 1,000 = 75 mcg. The dose
ordered matches the dose on hand, which equals 1 tablet.
7. A patient is instructed to take 2 teaspoons of cough syrup at home. How many
milliliters (mL) is this equivalent to?
A) 5 mL
B) 10 mL
C) 15 mL
D) 30 mL
• Rationale: One teaspoon (tsp) is equal to 5 mL. Therefore, 2 teaspoons × 5 mL = 10
mL.
8. Reduce the fraction 24/36 to its lowest terms.
A) 1/2
B) 3/4
C) 2/3
D) 5/6
• Rationale: Divide both the numerator and the denominator by their greatest
common divisor, which is 12. = 2 and = 3, yielding 2/3.
9. Convert the fraction 3/8 into a decimal.
A) 0.3
B) 0.35
C) 0.375
D) 0.38
• Rationale: Divide 3 by 8 to get the decimal equivalent, which equals 0.375.
10. A medication container has 0.125 g capsules. The provider orders 250 mg. How
many capsules will the nurse provide?
A) 1 capsule
B) 2 capsules
C) 3 capsules
D) 4 capsules
• Rationale: Convert 0.125 g to milligrams: 0.125 × 1,000 = 125 mg. (250 mg desired
/ 125 mg have) = 2 capsules.
11. Change the ratio 1:200 into a percentage.
A) 0.05%
, B) 0.5%
C) 5%
D) 50%
• Rationale: A ratio of 1:200 means 1 divided by 200, which equals 0.005. To convert
a decimal to a percentage, multiply by 100, which equals 0.5%.
12. A patient drank 8 ounces of water, 4 ounces of juice, and 6 ounces of gelatin. What
is the total fluid intake in milliliters (mL)?
A) 360 mL
B) 480 mL
C) 540 mL
D) 600 mL
• Rationale: Total ounces = 8 + 4 + 6 = 18 ounces. Convert ounces to mL by
multiplying by 30: 18 × 30 = 540 mL.
13. Convert 220 pounds to kilograms (kg).
A) 50 kg
B) 100 kg
C) 110 kg
D) 440 kg
• Rationale: Divide the weight in pounds by 2.2 to find kilograms. .2 = 100 kg.
14. Order: 1 tablespoon of medication twice a day. How many milliliters (mL) will the
patient take per dose?
A) 5 mL
B) 10 mL
C) 15 mL
D) 30 mL
• Rationale: One tablespoon (tbsp) is equivalent to 15 mL. The question asks for the
amount per single dose, which is 15 mL.
15. Solve for X: 4 : 12 :: X : 36.
A) 6
B) 9
C) 12
D) 18
• Rationale: In a proportion, multiply the extremes and the means: 12 × X = 4 × 36;
12X = 144; X = = 12.
16. Convert 450 micrograms (mcg) to milligrams (mg).
A) 0.045 mg
B) 0.45 mg
C) 4.5 mg
D) 45 mg
• Rationale: To convert micrograms to milligrams, divide by 1,000. ,000 = 0.45
mg.
17. A liquid medication vial reads 250 mcg/2 mL. The order is for 0.5 mg. How many mL
do you administer?
A) 1 mL
B) 2 mL
C) 3 mL
D) 4 mL
• Rationale: Convert 0.5 mg to mcg: 0.5 × 1,000 = 500 mcg. (500 mcg / 250 mcg) × 2
mL = 2 × 2 mL = 4 mL.
, 18. What is the equivalent of 39.4°C in Fahrenheit (°F)?
A) 101.1°F
B) 102.9°F
C) 103.5°F
D) 104.2°F
• Rationale: Use the formula (°C × 1.8) + 32. (39.4 × 1.8) + 32 = 70.92 + 32 =
102.92°F.
19. Convert 98.6°F to Celsius (°C).
A) 36°C
B) 37°C
C) 38°C
D) 39°C
• Rationale: Use the formula (°F - 32) / 1.8. (98.6 - 32) / 1.8 = 66..8 = 37°C.
20. A solution contains 5 grams of dextrose per 100 mL. What is the percentage strength
of this solution?
A) 0.5%
B) 1%
C) 5%
D) 50%
• Rationale: Percentage strength indicates grams of solute per 100 mL of fluid.
Therefore, 5 g per 100 mL is a 5% solution.
Oral & Parenteral Dosages (Chapters 4–5)
21. Order: Carvedilol 12.5 mg PO. Available: 6.25 mg tablets. How many tablets will the
nurse give?
A) 0.5 tablet
B) 1 tablet
C) 1.5 tablets
D) 2 tablets
• Rationale: (Desired / Have) = 12.5 mg / 6.25 mg = 2 tablets.
22. Order: Amoxicillin 500 mg PO. Available: Oral suspension 250 mg/5 mL. How many
mL are needed?
A) 2.5 mL
B) 5 mL
C) 10 mL
D) 20 mL
• Rationale: (Desired / Have) × Volume = () × 5 mL = 2 × 5 mL = 10 mL.
23. Order: Digoxin 0.125 mg PO. Available: 0.25 mg scored tablets. How many tablets
will be administered?
A) 0.5 tablet
B) 1 tablet
C) 1.5 tablets
D) 2 tablets
