Test Bank - Henke's Med-Math Dosage-Calculation,
Preparation, and Administration, 9th Edition
(Buchholz, 2020), Chapter 1-10 | All Chapters
1. A client is prescribed 500 mg of a medication. The available concentration is
250 mg per tablet. How many tablets should the nurse administer?
a. 1
b. 2
c. 2.5
d. 0.5
The dose required (500 mg) divided by the available dose per tablet (250 mg)
equals 2 tablets.
2. A provider orders 1.5 g of ceftriaxone IM. The vial contains 1 g per 2 mL.
How many mL should you administer?
a. 1.5
b. 3
c. 2
d. 2.5
1.5 g ÷ 1 g = 1.5 × 2 mL = 3 mL.
3. Order: Lasix 60 mg IV. Available: Lasix 20 mg/mL. How many mL will you
administer?
,a. 1 mL
b. 2 mL
c. 3 mL
d. 4 mL
60 mg ÷ 20 mg/mL = 3 mL.
4. You are to infuse 1,000 mL over 8 hours using an infusion pump. What is
the rate in mL/hr?
a. 100
b. 125
c. 120
d. 130
1,000 mL ÷ 8 hr = 125 mL/hr.
5. A child weighs 22 lb. What is their weight in kilograms?
a. 10
b. 11
c. 12
d. 9
22 lb ÷ 2.2 = 10 kg.
6. A physician prescribes 0.25 mg digoxin. You have 0.125 mg tablets. How
many tablets should you give?
a. 1
b. 2
,c. 3
d. 0.5
0.25 mg ÷ 0.125 mg = 2 tablets.
7. A client is to receive 1,000 mL of NS over 5 hours. Drop factor is 10 gtt/mL.
What is the drip rate?
a. 30 gtt/min
b. 35 gtt/min
c. 33 gtt/min
d. 40 gtt/min
1,000 ÷ 5 hr = 200 mL/hr = 3.33 mL/min × 10 = 33.3 gtt/min.
8. Order: Heparin 7,500 units subcutaneously. Available: Heparin 5,000
units/mL. How many mL?
a. 1.5
b. 2
c. 1.5
d. 0.75
7,500 ÷ 5,000 = 1.5 mL.
9. Convert 0.5 L to mL.
a. 250 mL
b. 100 mL
c. 500 mL
d. 5 mL
1 L = 1,000 mL, so 0.5 L = 500 mL.
, 10.Give furosemide 40 mg orally. Available: 20 mg tablets. How many tablets?
a. 3
b. 2
c. 1
d. 0.5
40 ÷ 20 = 2 tablets.
11.The client is prescribed 1.2 g of a drug. You have 400 mg capsules. How
many should you give?
a. 2
b. 3
c. 3
d. 4
1.2 g = 1,200 mg. 1,200 ÷ 400 = 3 capsules.
12.Order: 0.25 g. Available: 125 mg per tablet. How many tablets?
a. 1
b. 2
c. 2
d. 0.5
0.25 g = 250 mg; 250 ÷ 125 = 2 tablets.
13.An IV is to infuse 500 mL over 4 hours. Drop factor = 15 gtt/mL. What is the
drip rate?
Preparation, and Administration, 9th Edition
(Buchholz, 2020), Chapter 1-10 | All Chapters
1. A client is prescribed 500 mg of a medication. The available concentration is
250 mg per tablet. How many tablets should the nurse administer?
a. 1
b. 2
c. 2.5
d. 0.5
The dose required (500 mg) divided by the available dose per tablet (250 mg)
equals 2 tablets.
2. A provider orders 1.5 g of ceftriaxone IM. The vial contains 1 g per 2 mL.
How many mL should you administer?
a. 1.5
b. 3
c. 2
d. 2.5
1.5 g ÷ 1 g = 1.5 × 2 mL = 3 mL.
3. Order: Lasix 60 mg IV. Available: Lasix 20 mg/mL. How many mL will you
administer?
,a. 1 mL
b. 2 mL
c. 3 mL
d. 4 mL
60 mg ÷ 20 mg/mL = 3 mL.
4. You are to infuse 1,000 mL over 8 hours using an infusion pump. What is
the rate in mL/hr?
a. 100
b. 125
c. 120
d. 130
1,000 mL ÷ 8 hr = 125 mL/hr.
5. A child weighs 22 lb. What is their weight in kilograms?
a. 10
b. 11
c. 12
d. 9
22 lb ÷ 2.2 = 10 kg.
6. A physician prescribes 0.25 mg digoxin. You have 0.125 mg tablets. How
many tablets should you give?
a. 1
b. 2
,c. 3
d. 0.5
0.25 mg ÷ 0.125 mg = 2 tablets.
7. A client is to receive 1,000 mL of NS over 5 hours. Drop factor is 10 gtt/mL.
What is the drip rate?
a. 30 gtt/min
b. 35 gtt/min
c. 33 gtt/min
d. 40 gtt/min
1,000 ÷ 5 hr = 200 mL/hr = 3.33 mL/min × 10 = 33.3 gtt/min.
8. Order: Heparin 7,500 units subcutaneously. Available: Heparin 5,000
units/mL. How many mL?
a. 1.5
b. 2
c. 1.5
d. 0.75
7,500 ÷ 5,000 = 1.5 mL.
9. Convert 0.5 L to mL.
a. 250 mL
b. 100 mL
c. 500 mL
d. 5 mL
1 L = 1,000 mL, so 0.5 L = 500 mL.
, 10.Give furosemide 40 mg orally. Available: 20 mg tablets. How many tablets?
a. 3
b. 2
c. 1
d. 0.5
40 ÷ 20 = 2 tablets.
11.The client is prescribed 1.2 g of a drug. You have 400 mg capsules. How
many should you give?
a. 2
b. 3
c. 3
d. 4
1.2 g = 1,200 mg. 1,200 ÷ 400 = 3 capsules.
12.Order: 0.25 g. Available: 125 mg per tablet. How many tablets?
a. 1
b. 2
c. 2
d. 0.5
0.25 g = 250 mg; 250 ÷ 125 = 2 tablets.
13.An IV is to infuse 500 mL over 4 hours. Drop factor = 15 gtt/mL. What is the
drip rate?
