, Relias RN Advanced Math Ability |
Relias | Academic Year 2026/2027 |
Comprehensive Certification
Examination | 100 Verified Questions
and Correct Answer Rationales | rated
100% correct.
SECTION 1: BASIC DOSAGE CALCULATIONS
(Questions 1-20)
Question 1: A physician orders 0.5 grams of a medication to be given orally.
The medication is available in 250 mg tablets. How many tablets should the
nurse administer?
A. 0.5 tablets
B. 1 tablet
C. 2 tablets
D. 4 tablets
Correct Answer: C. 2 tablets
Rationale: First, convert grams to milligrams: 0.5 g × 1,000 = 500 mg. Then
divide the ordered dose by the available dose: 500 mg ÷ 250 mg per tablet
= 2 tablets .
,Question 2: The physician orders 0.3 g of a drug q12 hours PO. The drug is
available in 150 mg caplets. The nurse will administer ___ caplets to the
patient.
A. 1
B. 2
C. 3
D. 0.5
Correct Answer: B. 2
Rationale: Convert grams to milligrams: 0.3 g × 1,000 = 300 mg. Then
divide by the available dose: 300 mg ÷ 150 mg per caplet = 2 caplets .
Question 3: The physician orders 1 g of a drug. The pharmacy sent 250 mg
tablets. How many tablets would you administer?
A. 2
B. 4
C. 5
D. 6
Correct Answer: B. 4
Rationale: Convert 1 g to mg: 1 g × 1,000 = 1,000 mg. Then divide: 1,000
mg ÷ 250 mg per tablet = 4 tablets .
Question 4: The physician has ordered 100 mcg of medication IVP. It is
available in a pre-mixed syringe with a concentration of 1 mg/mL. You will
give ___ mL.
A. 0.1 mL
B. 0.5 mL
C. 1 mL
D. 10 mL
Correct Answer: A. 0.1 mL
, Rationale: Convert mcg to mg: 100 mcg ÷ 1,000 = 0.1 mg. Then divide by
concentration: 0.1 mg ÷ 1 mg/mL = 0.1 mL. The answer is recorded using
one decimal place as 0.1 mL .
Question 5: The physician has written an order for a medication, 3,000
units to be given SQ. You have on hand 5,000 units/mL. You will administer
___ mL.
A. 0.6 mL
B. 1.6 mL
C. 0.3 mL
D. 1.5 mL
Correct Answer: A. 0.6 mL
Rationale: Using the formula Desired / Have × Quantity: 3,000 units ÷ 5,000
units/mL × 1 mL = 0.6 mL .
Question 6: The surgeon orders for 75 mg of a medication to be given IV
push. The medication is available in a concentration of 125 mg/2 mL. You will
administer ___ mL to the patient.
A. 0.6 mL
B. 1.0 mL
C. 1.2 mL
D. 1.5 mL
Correct Answer: C. 1.2 mL
Rationale: Using Desired / Have × Quantity: 75 mg ÷ 125 mg × 2 mL = 1.2
mL .
Question 7: The nurse needs to administer 40 mg of Lasix IV push. The
available concentration is 10 mg/mL. How many mL should be given?
Relias | Academic Year 2026/2027 |
Comprehensive Certification
Examination | 100 Verified Questions
and Correct Answer Rationales | rated
100% correct.
SECTION 1: BASIC DOSAGE CALCULATIONS
(Questions 1-20)
Question 1: A physician orders 0.5 grams of a medication to be given orally.
The medication is available in 250 mg tablets. How many tablets should the
nurse administer?
A. 0.5 tablets
B. 1 tablet
C. 2 tablets
D. 4 tablets
Correct Answer: C. 2 tablets
Rationale: First, convert grams to milligrams: 0.5 g × 1,000 = 500 mg. Then
divide the ordered dose by the available dose: 500 mg ÷ 250 mg per tablet
= 2 tablets .
,Question 2: The physician orders 0.3 g of a drug q12 hours PO. The drug is
available in 150 mg caplets. The nurse will administer ___ caplets to the
patient.
A. 1
B. 2
C. 3
D. 0.5
Correct Answer: B. 2
Rationale: Convert grams to milligrams: 0.3 g × 1,000 = 300 mg. Then
divide by the available dose: 300 mg ÷ 150 mg per caplet = 2 caplets .
Question 3: The physician orders 1 g of a drug. The pharmacy sent 250 mg
tablets. How many tablets would you administer?
A. 2
B. 4
C. 5
D. 6
Correct Answer: B. 4
Rationale: Convert 1 g to mg: 1 g × 1,000 = 1,000 mg. Then divide: 1,000
mg ÷ 250 mg per tablet = 4 tablets .
Question 4: The physician has ordered 100 mcg of medication IVP. It is
available in a pre-mixed syringe with a concentration of 1 mg/mL. You will
give ___ mL.
A. 0.1 mL
B. 0.5 mL
C. 1 mL
D. 10 mL
Correct Answer: A. 0.1 mL
, Rationale: Convert mcg to mg: 100 mcg ÷ 1,000 = 0.1 mg. Then divide by
concentration: 0.1 mg ÷ 1 mg/mL = 0.1 mL. The answer is recorded using
one decimal place as 0.1 mL .
Question 5: The physician has written an order for a medication, 3,000
units to be given SQ. You have on hand 5,000 units/mL. You will administer
___ mL.
A. 0.6 mL
B. 1.6 mL
C. 0.3 mL
D. 1.5 mL
Correct Answer: A. 0.6 mL
Rationale: Using the formula Desired / Have × Quantity: 3,000 units ÷ 5,000
units/mL × 1 mL = 0.6 mL .
Question 6: The surgeon orders for 75 mg of a medication to be given IV
push. The medication is available in a concentration of 125 mg/2 mL. You will
administer ___ mL to the patient.
A. 0.6 mL
B. 1.0 mL
C. 1.2 mL
D. 1.5 mL
Correct Answer: C. 1.2 mL
Rationale: Using Desired / Have × Quantity: 75 mg ÷ 125 mg × 2 mL = 1.2
mL .
Question 7: The nurse needs to administer 40 mg of Lasix IV push. The
available concentration is 10 mg/mL. How many mL should be given?
