Question: A nurse is preparing to administer dextrose 5% in water 2 L to infuse over 6 hr. The nurse should administer how many mL? (Round the answer to the nearest whole number.)

Answer: 2000 mL

Question: A nurse is preparing a medication and calculates the dosage as 0.547 mL. Rounding this amount to the nearest hundredth, the nurse should administer how many mL? (Round the answer to the nearest hundredth.)

Answer: 0.55 mL

When rounding doses less than 1, round to the hundredth. If the number in the thousandths place is equal to or greater than 5, round up by adding 1 to the number to the left, the hundredths place. Therefore, 0.547 rounds to 0.55 mL.

Question: A nurse is preparing to administer diphenhydramine (Benadryl) 25 mg PO every 12 hr. Available is diphenhydramine syrup 12.5 mg/5 mL. How many tsp should the nurse administer per dose? (Round the answer to the nearest whole number.)

Answer: 2 tsp

Question: A nurse is preparing to administer digoxin (Lanoxin) 0.125 mg PO at 9:00 a.m. Which of the following is the appropriate time for the nurse to administer the medication?

Answer: 0900

​0900 according to the military or 24-hr clock is equivalent to 9:00 a.m. according to standard time on the 12-hr clock.

Question: A nurse is preparing to administer furosemide (Lasix) 40 mg PO in 0.5 oz orange juice. How many mL of orange juice should the nurse administer? (Round the answer to the nearest whole number.)

Answer: 15 mL

Question: A nurse is preparing to administer epinephrine hydrochloride (Adrenalin Chloride) 0.5 mg subcutaneous stat. How many mcg should the nurse administer? (Round the answer to the nearest whole number.)

Answer: 500 mcg

Question: A nurse is preparing to administer 0.9% sodium chloride 2,500 mL to infuse over 12 hr. The nurse should administer how many L? (Round the answer to the nearest tenth.)

Answer: 2.5 L

Question: A nurse is preparing to administer regular insulin (Humulin R) 15 units and isophane insulin (Humulin N) 40 units subcutaneous at 6:30 a.m. Which of the following is the appropriate time for the nurse to administer the medication?

Answer: 0630

​0630 according to the military or 24-hr clock is equivalent to 6:30 a.m. according to standard time on the 12-hr clock.

Question: A nurse is preparing a medication and calculates the dosage at 6.25 mL. Rounding this amount to the tenth, the nurse should administer how many mL?

Answer: 6.3 mL

When rounding doses greater than 1, round to the nearest tenth. If the number in the hundredths place is equal to or greater than 5, round up by adding 1 to the number in the tenths place. Therefore, 6.25 rounds to 6.3 mL.

Question: A nurse is preparing a medication and calculates the dosage as 0.893 mL. Rounding this amount to the nearest hundredth, the nurse should administer how many mL? (Round the answer to the nearest hundredth.)

Answer: 0.89 mL

When rounding doses less than 1, round to the hundredth. If the number in the thousandths place is less than 5, drop the number and leave the number in the hundredths place as is. Therefore, 0.893 rounds to 0.89 mL.