NURSING Dosage Calculation Practice
Questions Latest update 2025/2026
GRADED A+
A patient is ordered 120mg of Lassie PO to be given stat. The medication is available in
40mg tablets. How many tablets do you give?
a) 1
b) 2
c) 3
d) 4 - correct answerC) 3
120mg/40mg * 1 tablet = 3 tablets
A patient is ordered 975mg of acetaminophen PO. The medication is available in 325mg
tablets. How many tablets do you give?
a) 1
b) 2
c) 3
d) 4 - correct answerC) 3
975mg/325mg * 1 tablet = 3 tablets
A patient is ordered 0.5mg of hydromorphone SC q1h prn. Hydromorphone is available
in a 2mg/mL concentration contained in 1mL vials. How much do you give per dose?
a) 0.25mL
b) 0.5mL
c) 0.75mL
d) 1mL - correct answerA) 0.25mL
0.5mg/2mg * 1mL
= 0.25 * 1mL
= 0.25mL
A patient is ordered 0.4mg of Scopolamine SC q2h prn. Scopolamine is available in
0.6mg/mL concentration. Each vial contains 1mL. How much do you give per dose?
a) 0.24mL
b) 1.5mL
, c) 0.1mL
d) 0.67mL - correct answerD) 0.67mL
0.4mg/0.6mg * 1mL
= 0.67 * 1mL
= 0.67mL
A patient is ordered 2mg of Versed q2h SC pro for terminal restlessness. Versed is
available in 10mg/mL concentrations. Each vial contains 2mL. How much do you give?
a) 2mL
b) 0.2mL
c) 0.4mL
d) 1.2mL - correct answerB) 0.2mL
2mg/10mg * 1mL
= 0.2 * 1mL
= 0.2mL
(Note: The amount in the vial is irrelevant information. Even if the vial contained
1000mL, it still doesn't change the concentration of the medication -- 10mg/mL.
Therefore, the "vehicle" in the formula remains 1mL)
A patient is ordered 10,000 units of Heparin to be given SC every morning. Heparin is
available in a 5000 unit per 0.5mL concentration. How much do you give?
a) 1mL
b) 2000mL
c) 5mL
d) 50mL - correct answerA) 1mL
10000u/5000u * 0.5mL
= 2 * 0.5mL
=1
A patient is ordered 1.75g of IV Vancomycin daily at 1200hr. Prior to reconstitution,
Vancomycin is available in 1g vials. How much do you give?
a) 1 vial
b) 2 vials
c) 1.75 vials
d) 1.5 vials - correct answerC) 1.75 vials
1.75g/1g * 1 vial
= 1.75 * 1 vial
= 1.75 vials
Questions Latest update 2025/2026
GRADED A+
A patient is ordered 120mg of Lassie PO to be given stat. The medication is available in
40mg tablets. How many tablets do you give?
a) 1
b) 2
c) 3
d) 4 - correct answerC) 3
120mg/40mg * 1 tablet = 3 tablets
A patient is ordered 975mg of acetaminophen PO. The medication is available in 325mg
tablets. How many tablets do you give?
a) 1
b) 2
c) 3
d) 4 - correct answerC) 3
975mg/325mg * 1 tablet = 3 tablets
A patient is ordered 0.5mg of hydromorphone SC q1h prn. Hydromorphone is available
in a 2mg/mL concentration contained in 1mL vials. How much do you give per dose?
a) 0.25mL
b) 0.5mL
c) 0.75mL
d) 1mL - correct answerA) 0.25mL
0.5mg/2mg * 1mL
= 0.25 * 1mL
= 0.25mL
A patient is ordered 0.4mg of Scopolamine SC q2h prn. Scopolamine is available in
0.6mg/mL concentration. Each vial contains 1mL. How much do you give per dose?
a) 0.24mL
b) 1.5mL
, c) 0.1mL
d) 0.67mL - correct answerD) 0.67mL
0.4mg/0.6mg * 1mL
= 0.67 * 1mL
= 0.67mL
A patient is ordered 2mg of Versed q2h SC pro for terminal restlessness. Versed is
available in 10mg/mL concentrations. Each vial contains 2mL. How much do you give?
a) 2mL
b) 0.2mL
c) 0.4mL
d) 1.2mL - correct answerB) 0.2mL
2mg/10mg * 1mL
= 0.2 * 1mL
= 0.2mL
(Note: The amount in the vial is irrelevant information. Even if the vial contained
1000mL, it still doesn't change the concentration of the medication -- 10mg/mL.
Therefore, the "vehicle" in the formula remains 1mL)
A patient is ordered 10,000 units of Heparin to be given SC every morning. Heparin is
available in a 5000 unit per 0.5mL concentration. How much do you give?
a) 1mL
b) 2000mL
c) 5mL
d) 50mL - correct answerA) 1mL
10000u/5000u * 0.5mL
= 2 * 0.5mL
=1
A patient is ordered 1.75g of IV Vancomycin daily at 1200hr. Prior to reconstitution,
Vancomycin is available in 1g vials. How much do you give?
a) 1 vial
b) 2 vials
c) 1.75 vials
d) 1.5 vials - correct answerC) 1.75 vials
1.75g/1g * 1 vial
= 1.75 * 1 vial
= 1.75 vials
