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Health Calculations Practice Test
Basic Math Review
A patient is prescribed 500 mg of a medication. The available tablets are 250 mg each. How many tablets should be administered?
a) 1 tablet
b) 2 tablets
c) 3 tablets
d) 4 tablets
Answer: b) 2 tablets
Explanation: 500 mg÷250 mg/tablet=2 tablets500 \text{ mg} \div 250 \text{ mg/tablet} = 2 \text{ tablets}500 mg÷250 mg/tablet=2 tablets.
A physician orders 0.25 L of IV fluid. How many milliliters is this?
a) 25 mL
b) 100 mL
c) 250 mL
d) 500 mL
Answer: c) 250 mL
Explanation: 1 L=1000 mL1 \text{ L} = 1000 \text{ mL}1 L=1000 mL, so 0.25×1000=250 mL0.25 \times 1000 = 250 \text{ mL}0.25×1000=250 mL.
Convert 3.5 grams to milligrams.
a) 35 mg
b) 350 mg
c) 3,500 mg
d) 35,000 mg
Answer: c) 3,500 mg
Explanation: 1 g=1000 mg1 \text{ g} = 1000 \text{ mg}1 g=1000 mg, so 3.5×1000=3500 mg3.5 \times 1000 = 3500 \text{ mg}3.5×1000=3500 mg.
The doctor orders 1.2 grams of medication. How many milligrams should be administered?
a) 120 mg
b) 1,200 mg
c) 12,000 mg
d) 120,000 mg
Answer: b) 1,200 mg
Explanation: 1 g=1000 mg1 \text{ g} = 1000 \text{ mg}1 g=1000 mg, so 1.2×1000=1200 mg1.2 \times 1000 = 1200 \text{ mg}1.2×1000=1200 mg.
Convert 750 mL to liters.
a) 0.75 L
b) 7.5 L
c) 75 L
d) 0.0075 L
Answer: a) 0.75 L
Explanation: 1 L=1000 mL1 \text{ L} = 1000 \text{ mL}1 L=1000 mL, so 750÷1000=0.75 L750 \div 1000 = 0.75 \text{ L}750÷1000=0.75 L.
Dosage Calculations
A child weighs 44 pounds. Convert this to kilograms.
a) 20 kg
b) 44 kg
c) 22 kg
d) 88 kg
Answer: a) 20 kg
Explanation: 1 kg=2.2 lbs1 \text{ kg} = 2.2 \text{ lbs}1 kg=2.2 lbs, so 44÷2.2=20 kg44 \div 2.2 = 20 \text{ kg}44÷2.2=20 kg.
A medication is prescribed at 4 mg/kg for a patient weighing 50 kg. How many mg should be given?
a) 100 mg
b) 150 mg
c) 200 mg
d) 250 mg
Answer: c) 200 mg
Explanation: 4×50=200 mg4 \times 50 = 200 \text{ mg}4×50=200 mg.
A nurse needs to administer 1.5 mg/kg of a drug to a patient weighing 80 kg. What is the total dose?
a) 120 mg
b) 100 mg
c) 80 mg
d) 150 mg
Answer: d) 150 mg
Explanation: 1.5×80=120 mg1.5 \times 80 = 120 \text{ mg}1.5×80=120 mg.
IV Flow Rate Calculations
A physician orders 1000 mL of IV fluid to be given over 8 hours. What is the flow rate in mL per hour?
a) 80 mL/hr
b) 100 mL/hr
c) 125 mL/hr
d) 150 mL/hr
Answer: c) 125 mL/hr
Explanation: 1000 mL÷8 hr=125 mL/hr1000 \text{ mL} \div 8 \text{ hr} = 125 \text{ mL/hr}1000 mL÷8 hr=125 mL/hr.
An IV infusion is ordered at 50 mL/hr. How many mL will be given over 4 hours?
a) 100 mL
b) 150 mL
c) 200 mL
d) 250 mL
Answer: c) 200 mL
Explanation: 50 mL/hr×4=200 mL50 \text{ mL/hr} \times 4 = 200 \text{ mL}50 mL/hr×4=200 mL.
Medication Administration
A vial contains 10 mg/mL of medication. The order is for 25 mg. How many mL should be drawn?
a) 1.5 mL
b) 2.5 mL
c) 5 mL
d) 10 mL
Answer: b) 2.5 mL
Explanation: 25 mg÷10 mg/mL=2.5 mL25 \text{ mg} \div 10 \text{ mg/mL} = 2.5 \text{ mL}25 mg÷10 mg/mL=2.5 mL.
A patient needs 60 mg of a drug. The available dose is 30 mg per tablet. How many tablets are required?
a) 1 tablet
b) 2 tablets
c) 3 tablets
d) 4 tablets
Answer: b) 2 tablets
Explanation: 60 mg÷30 mg/tablet=2 tablets60 \text{ mg} \div 30 \text{ mg/tablet} = 2 \text{ tablets}60 mg÷30 mg/tablet=2 tablets.
Additional Questions
Convert 500 mcg to mg.
a) 0.05 mg
b) 0.5 mg
c) 5 mg
d) 50 mg
Answer: b) 0.5 mg
Explanation: 1000 mcg=1 mg1000 \text{ mcg} = 1 \text{ mg}1000 mcg=1 mg, so 500÷1000=0.5 mg500 \div 1000 = 0.5 \text{ mg}500÷1000=0.5 mg.
A medication order reads 250 mg every 6 hours. How many mg will the patient receive in 24 hours?
a) 500 mg
b) 750 mg
c) 1000 mg
d) 1250 mg
Answer: c) 1000 mg
Explanation: 250×4=1000 mg250 \times 4 = 1000 \text{ mg}250×4=1000 mg.
A drug is supplied as 20 mg/mL. The order is for 80 mg. How many mL should be administered?
a) 2 mL
b) 3 mL
c) 4 mL
d) 5 mL
Answer: c) 4 mL
Explanation: 80 mg÷20 mg/mL=4 mL80 \text{ mg} \div 20 \text{ mg/mL} = 4 \text{ mL}80 mg÷20 mg/mL=4 mL.
Metric and Household Conversions
Convert 2.5 L to milliliters.
a) 250 mL
b) 2,500 mL
c) 25,000 mL
d) 250,000 mL
Answer: b) 2,500 mL
Explanation: 1 L=1000 mL1 \text{ L} = 1000 \text{ mL}1 L=1000 mL, so 2.5×1000=2500 mL2.5 \times 1000 = 2500 \text{ mL}2.5×1000=2500 mL.
Convert 3 teaspoons (tsp) to milliliters (mL).
a) 5 mL
b) 10 mL
c) 15 mL
d) 30 mL
Answer: c) 15 mL
Explanation: 1 tsp=5 mL1 \text{ tsp} = 5 \text{ mL}1 tsp=5 mL, so 3×5=15 mL3 \times 5 = 15 \text{ mL}3×5=15 mL.
How many tablespoons (Tbsp) are in 30 mL?
a) 1 Tbsp
b) 2 Tbsp
c) 3 Tbsp
d) 4 Tbsp
Answer: b) 2 Tbsp
Explanation: 1 Tbsp=15 mL1 \text{ Tbsp} = 15 \text{ mL}1 Tbsp=15 mL, so 30÷15=2 Tbsp30 \div 15 = 2 \text{ Tbsp}30÷15=2 Tbsp.
Convert 1.5 grams to milligrams.
a) 150 mg
b) 1,500 mg
c) 15,000 mg
d) 150,000 mg
Answer: b) 1,500 mg
Explanation: 1 g=1000 mg1 \text{ g} = 1000 \text{ mg}1 g=1000 mg, so 1.5×1000=1500 mg1.5 \times 1000 = 1500 \text{ mg}1.5×1000=1500 mg.
Dosage by Body Weight
A medication is ordered as 8 mg/kg for a child who weighs 25 kg. How many mg should be administered?
a) 150 mg
b) 200 mg
c) 250 mg
d) 300 mg
Answer: b) 200 mg
Explanation: 8×25=200 mg8 \times 25 = 200 \text{ mg}8×25=200 mg.
A doctor prescribes 0.5 mg per pound for a patient weighing 154 lbs. How many mg should be administered?
a) 50 mg
b) 77 mg
c) 100 mg
d) 125 mg
Answer: b) 77 mg
Explanation: 0.5×154=77 mg0.5 \times 154 = 77 \text{ mg}0.5×154=77 mg.
A child weighing 30 kg needs a medication dose of 1.5 mg/kg. How much medication should be administered?
a) 30 mg
b) 45 mg
c) 50 mg
d) 60 mg
Answer: b) 45 mg
Explanation: 1.5×30=45 mg1.5 \times 30 = 45 \text{ mg}1.5×30=45 mg.
IV Flow Rate and Infusion Calculations
A nurse needs to infuse 500 mL of IV fluid over 4 hours. What is the flow rate in mL per hour?
a) 100 mL/hr
b) 125 mL/hr
c) 150 mL/hr
d) 200 mL/hr
Answer: b) 125 mL/hr
Explanation: 500÷4=125 mL/hr500 \div 4 = 125 \text{ mL/hr}500÷4=125 mL/hr.
An IV order is for 1,500 mL over 12 hours. What is the hourly infusion rate?
a) 100 mL/hr
b) 125 mL/hr
c) 150 mL/hr
d) 175 mL/hr
Answer: b) 125 mL/hr
Explanation: 1500÷12=125 mL/hr1500 \div 12 = 125 \text{ mL/hr}1500÷12=125 mL/hr.
A nurse needs to administer 750 mL over 6 hours. What is the infusion rate?
a) 100 mL/hr
b) 110 mL/hr
c) 120 mL/hr
d) 125 mL/hr
Answer: a) 100 mL/hr
Explanation: 750÷6=100 mL/hr750 \div 6 = 100 \text{ mL/hr}750÷6=100 mL/hr.
An IV is set to infuse at 50 mL/hr. How long will it take to infuse 600 mL?
a) 10 hours
b) 12 hours
c) 15 hours
d) 20 hours
Answer: b) 12 hours
Explanation: 600÷50=12 hours600 \div 50 = 12 \text{ hours}600÷50=12 hours.
Medication Dosage and Injection Calculations
A medication is available as 5 mg/mL, and the order is for 20 mg. How many mL should be administered?
a) 2 mL
b) 3 mL
c) 4 mL
d) 5 mL
Answer: c) 4 mL
Explanation: 20÷5=4 mL20 \div 5 = 4 \text{ mL}20÷5=4 mL.
A vial contains 50 mg/2 mL of a drug. The doctor orders 25 mg. How many mL should be drawn up?
a) 0.5 mL
b) 1.0 mL
c) 1.5 mL
d) 2.0 mL
Answer: b) 1.0 mL
Explanation: 50 mg=2 mL50 \text{ mg} = 2 \text{ mL}50 mg=2 mL, so 25 mg=1.0 mL25 \text{ mg} = 1.0 \text{ mL}25 mg=1.0 mL.
A patient is prescribed 250 mg of a drug that is available as 125 mg per 5 mL. How many mL should be given?
a) 5 mL
b) 10 mL
c) 15 mL
d) 20 mL
Answer: b) 10 mL
Explanation: 250÷125=2250 \div 125 = 2250÷125=2 doses of 5 mL5 \text{ mL}5 mL, so 2×5=10 mL2 \times 5 = 10 \text{ mL}2×5=10 mL.
A nurse must administer 0.75 mg of a drug available in 1 mg per mL concentration. How many mL should be drawn up?
a) 0.25 mL
b) 0.50 mL
c) 0.75 mL
d) 1.0 mL
Answer: c) 0.75 mL
Explanation: 0.75 mg=0.75 mL0.75 \text{ mg} = 0.75 \text{ mL}0.75 mg=0.75 mL because 1 mg=1 mL1 \text{ mg} = 1 \text{ mL}1 mg=1 mL.
Set 2
Basic Math and Measurement Conversions
Convert 0.75 grams to milligrams.
a) 750 mg
b) 75 mg
c) 7.5 mg
d) 0.075 mg
Answer: a) 750 mg
Explanation: 1 g=1000 mg1 \text{ g} = 1000 \text{ mg}1 g=1000 mg, so 0.75×1000=750 mg0.75 \times 1000 = 750 \text{ mg}0.75×1000=750 mg.
How many milliliters are in 0.25 liters?
a) 250 mL
b) 25 mL
c) 2.5 mL
d) 0.025 mL
Answer: a) 250 mL
Explanation: 1 L=1000 mL1 \text{ L} = 1000 \text{ mL}1 L=1000 mL, so 0.25×1000=250 mL0.25 \times 1000 = 250 \text{ mL}0.25×1000=250 mL.
Convert 1.2 kilograms to grams.
a) 120 g
b) 1,200 g
c) 12,000 g
d) 120,000 g
Answer: b) 1,200 g
Explanation: 1 kg=1000 g1 \text{ kg} = 1000 \text{ g}1 kg=1000 g, so 1.2×1000=1200 g1.2 \times 1000 = 1200 \text{ g}1.2×1000=1200 g.
Convert 4 tablespoons (Tbsp) to milliliters.
a) 20 mL
b) 30 mL
c) 45 mL
d) 60 mL
Answer: d) 60 mL
Explanation: 1 Tbsp=15 mL1 \text{ Tbsp} = 15 \text{ mL}1 Tbsp=15 mL, so 4×15=60 mL4 \times 15 = 60 \text{ mL}4×15=60 mL.
Dosage Calculation Based on Body Weight
A doctor orders 6 mg/kg of a medication for a 35 kg child. What is the total dose?
a) 140 mg
b) 180 mg
c) 210 mg
d) 250 mg
Answer: c) 210 mg
Explanation: 6×35=210 mg6 \times 35 = 210 \text{ mg}6×35=210 mg.
A child weighing 22 kg needs an antibiotic at 10 mg/kg/day divided into two doses. How much should be given per dose?
a) 110 mg
b) 120 mg
c) 150 mg
d) 220 mg
Answer: a) 110 mg
Explanation: 10×22=220 mg/day10 \times 22 = 220 \text{ mg/day}10×22=220 mg/day, divided by 2 = 110 mg per dose.
Oral and Injection Medication Calculations
A patient needs 500 mg of a drug. The available medication is 250 mg per tablet. How many tablets should be given?
a) 1 tablet
b) 2 tablets
c) 3 tablets
d) 4 tablets
Answer: b) 2 tablets
Explanation: 500÷250=2500 \div 250 = 2500÷250=2 tablets.
A nurse needs to administer 15 mg of a drug available in 5 mg/mL. How many mL should be given?
a) 1 mL
b) 2 mL
c) 3 mL
d) 4 mL
Answer: c) 3 mL
Explanation: 15÷5=3 mL15 \div 5 = 3 \text{ mL}15÷5=3 mL.
IV Flow Rate Calculations
A nurse must administer 1,200 mL of IV fluid over 8 hours. What is the infusion rate in mL per hour?
a) 100 mL/hr
b) 125 mL/hr
c) 150 mL/hr
d) 200 mL/hr
Answer: b) 125 mL/hr
Explanation: 1200÷8=125 mL/hr1200 \div 8 = 125 \text{ mL/hr}1200÷8=125 mL/hr.
An order is for 500 mL of IV fluid to run over 4 hours. The tubing delivers 20 gtt/mL. What is the drip rate in gtt/min?
a) 30 gtt/min
b) 42 gtt/min
c) 50 gtt/min
d) 60 gtt/min
Answer: b) 42 gtt/min
Explanation: (500×20)÷(4×60)=42 gtt/min(500 \times 20) \div (4 \times 60) = 42 \text{ gtt/min}(500×20)÷(4×60)=42 gtt/min.
Insulin and Heparin Calculations
A patient is prescribed 40 units of insulin. The vial contains 100 units/mL. How many mL should be drawn up?
a) 0.2 mL
b) 0.4 mL
c) 0.6 mL
d) 0.8 mL
Answer: b) 0.4 mL
Explanation: 40÷100=0.4 mL40 \div 100 = 0.4 \text{ mL}40÷100=0.4 mL.
A patient is to receive 5000 units of heparin from a vial containing 10,000 units/mL. How many mL should be given?
a) 0.25 mL
b) 0.5 mL
c) 0.75 mL
d) 1 mL
Answer: b) 0.5 mL
Explanation: 5000÷10000=0.5 mL5000 \div 10000 = 0.5 \text{ mL}5000÷10000=0.5 mL.
Pediatric Medication Dosage
A doctor prescribes amoxicillin at 20 mg/kg/day for a child weighing 15 kg. What is the total daily dose?
a) 150 mg
b) 200 mg
c) 300 mg
d) 400 mg
Answer: c) 300 mg
Explanation: 20×15=300 mg/day20 \times 15 = 300 \text{ mg/day}20×15=300 mg/day.
A child weighing 12 kg needs acetaminophen at 15 mg/kg per dose. How much should be administered?
a) 120 mg
b) 150 mg
c) 180 mg
d) 200 mg
Answer: c) 180 mg
Explanation: 15×12=180 mg15 \times 12 = 180 \text{ mg}15×12=180 mg.
Fluid Maintenance Calculation
A patient needs a maintenance fluid rate of 4 mL/kg/hr. If they weigh 70 kg, how much fluid should they receive per hour?
a) 140 mL/hr
b) 210 mL/hr
c) 280 mL/hr
d) 350 mL/hr
Answer: c) 280 mL/hr
Explanation: 4×70=280 mL/hr4 \times 70 = 280 \text{ mL/hr}4×70=280 mL/hr.
Set 3
Conversions and Basic Math Calculations
Convert 2.5 grams to milligrams.
a) 250 mg
b) 2,500 mg
c) 25,000 mg
d) 0.025 mg
Answer: b) 2,500 mg
Explanation: 1 g=1000 mg1 \text{ g} = 1000 \text{ mg}1 g=1000 mg, so 2.5×1000=2500 mg2.5 \times 1000 = 2500 \text{ mg}2.5×1000=2500 mg.
How many teaspoons are in 30 mL?
a) 2 tsp
b) 4 tsp
c) 6 tsp
d) 8 tsp
Answer: c) 6 tsp
Explanation: 1 tsp=5 mL1 \text{ tsp} = 5 \text{ mL}1 tsp=5 mL, so 30÷5=6 tsp30 \div 5 = 6 \text{ tsp}30÷5=6 tsp.
Convert 0.3 L to milliliters.
a) 30 mL
b) 300 mL
c) 3,000 mL
d) 30,000 mL
Answer: b) 300 mL
Explanation: 1 L=1000 mL1 \text{ L} = 1000 \text{ mL}1 L=1000 mL, so 0.3×1000=300 mL0.3 \times 1000 = 300 \text{ mL}0.3×1000=300 mL.
Dosage Calculations
A physician orders 750 mg of a medication. It is available in 250 mg tablets. How many tablets should be given?
a) 1 tablet
b) 2 tablets
c) 3 tablets
d) 4 tablets
Answer: c) 3 tablets
Explanation: 750÷250=3750 \div 250 = 3750÷250=3 tablets.
A nurse needs to administer 400 mg of a drug. The available strength is 100 mg per 2 mL. How many mL should be given?
a) 4 mL
b) 6 mL
c) 8 mL
d) 10 mL
Answer: c) 8 mL
Explanation: 400÷100=4400 \div 100 = 4400÷100=4 doses, and each dose is 2 mL, so 4×2=8 mL4 \times 2 = 8 \text{ mL}4×2=8 mL.
IV Flow Rate Calculations
An IV is ordered to run at 80 mL/hr for 6 hours. What total volume will be infused?
a) 240 mL
b) 360 mL
c) 480 mL
d) 600 mL
Answer: c) 480 mL
Explanation: 80×6=480 mL80 \times 6 = 480 \text{ mL}80×6=480 mL.
An IV order is for 1,500 mL to be infused over 12 hours. What is the infusion rate in mL per hour?
a) 100 mL/hr
b) 125 mL/hr
c) 150 mL/hr
d) 175 mL/hr
Answer: b) 125 mL/hr
Explanation: 1500÷12=125 mL/hr1500 \div 12 = 125 \text{ mL/hr}1500÷12=125 mL/hr.
A physician orders 1000 mL of fluid over 8 hours. The tubing delivers 15 gtt/mL. What is the drip rate in gtt/min?
a) 25 gtt/min
b) 31 gtt/min
c) 35 gtt/min
d) 45 gtt/min
Answer: b) 31 gtt/min
Explanation:
(1000×15)÷(8×60)=31 gtt/min(1000 \times 15) \div (8 \times 60) = 31 \text{ gtt/min}(1000×15)÷(8×60)=31 gtt/min
Pediatric Medication Dosages
A child weighs 10 kg and needs a medication at 5 mg/kg per dose. How much medication should be given?
a) 20 mg
b) 40 mg
c) 50 mg
d) 60 mg
Answer: c) 50 mg
Explanation: 10×5=50 mg10 \times 5 = 50 \text{ mg}10×5=50 mg.
A doctor prescribes 15 mg/kg/day of a drug for a child weighing 30 kg. What is the total daily dose?
a) 300 mg
b) 450 mg
c) 500 mg
d) 600 mg
Answer: b) 450 mg
Explanation: 15×30=450 mg15 \times 30 = 450 \text{ mg}15×30=450 mg.
Insulin and Heparin Calculations
A patient is prescribed 50 units of insulin. The vial contains 100 units/mL. How many mL should be drawn?
a) 0.25 mL
b) 0.5 mL
c) 0.75 mL
d) 1 mL
Answer: b) 0.5 mL
Explanation: 50÷100=0.5 mL50 \div 100 = 0.5 \text{ mL}50÷100=0.5 mL.
A patient requires 7,500 units of heparin. The vial contains 10,000 units/mL. How many mL should be given?
a) 0.25 mL
b) 0.5 mL
c) 0.75 mL
d) 1 mL
Answer: c) 0.75 mL
Explanation: 7500÷10000=0.75 mL7500 \div 10000 = 0.75 \text{ mL}7500÷10000=0.75 mL.
Fluid Maintenance and Electrolyte Calculations
A patient needs a maintenance fluid rate of 3 mL/kg/hr. If they weigh 80 kg, how much fluid should they receive per hour?
a) 160 mL/hr
b) 200 mL/hr
c) 240 mL/hr
d) 300 mL/hr
Answer: c) 240 mL/hr
Explanation: 3×80=240 mL/hr3 \times 80 = 240 \text{ mL/hr}3×80=240 mL/hr.
A doctor orders 500 mL of 0.9% sodium chloride to run over 5 hours. What is the rate in mL/hr?
a) 80 mL/hr
b) 100 mL/hr
c) 120 mL/hr
d) 150 mL/hr
Answer: b) 100 mL/hr
Explanation: 500÷5=100 mL/hr500 \div 5 = 100 \text{ mL/hr}500÷5=100 mL/hr.
Set 4
Basic Math and Conversions
Convert 2.75 grams to milligrams.
a) 275 mg
b) 2,750 mg
c) 27,500 mg
d) 275,000 mg
Answer: b) 2,750 mg
Convert 500 mL to liters.
a) 0.05 L
b) 0.5 L
c) 5 L
d) 50 L
Answer: b) 0.5 L
Convert 180 pounds to kilograms.
a) 81.8 kg
b) 82 kg
c) 90 kg
d) 100 kg
Answer: a) 81.8 kg
Convert 3 ounces to milliliters.
a) 30 mL
b) 60 mL
c) 90 mL
d) 120 mL
Answer: c) 90 mL
A doctor orders 1.5 teaspoons of medication. How many milliliters should be given?
a) 5 mL
b) 7.5 mL
c) 10 mL
d) 15 mL
Answer: b) 7.5 mL
Oral Medication Dosage Calculations
A doctor prescribes 400 mg of a drug. The available tablets are 100 mg each. How many tablets should be given?
a) 2 tablets
b) 3 tablets
c) 4 tablets
d) 5 tablets
Answer: c) 4 tablets
A patient is prescribed 1.2 g of an antibiotic. The pharmacy has 600 mg tablets. How many tablets should be given?
a) 1 tablet
b) 2 tablets
c) 3 tablets
d) 4 tablets
Answer: b) 2 tablets
A doctor orders 10 mL of a liquid medication. The concentration is 50 mg per 5 mL. How many mg will the patient receive?
a) 50 mg
b) 100 mg
c) 150 mg
d) 200 mg
Answer: b) 100 mg
IV Flow Rate Calculations
An IV order is for 1,200 mL over 8 hours. What is the infusion rate in mL/hr?
a) 100 mL/hr
b) 125 mL/hr
c) 150 mL/hr
d) 200 mL/hr
Answer: b) 125 mL/hr
A patient requires 750 mL of fluid over 5 hours. What is the flow rate in mL/hr?
a) 100 mL/hr
b) 125 mL/hr
c) 150 mL/hr
d) 175 mL/hr
Answer: c) 150 mL/hr
An IV is set to deliver 1,500 mL in 10 hours. What is the flow rate in mL/hr?
a) 125 mL/hr
b) 150 mL/hr
c) 175 mL/hr
d) 200 mL/hr
Answer: a) 150 mL/hr
A 1,000 mL IV bag is set to run over 12 hours using 15 gtt/mL tubing. What is the drip rate in gtt/min?
a) 12 gtt/min
b) 21 gtt/min
c) 25 gtt/min
d) 30 gtt/min
Answer: b) 21 gtt/min
Pediatric Dosage Calculations
A child weighs 20 kg. The prescribed dose is 5 mg/kg. What is the correct dose?
a) 50 mg
b) 75 mg
c) 100 mg
d) 125 mg
Answer: c) 100 mg
A doctor orders 30 mg/kg/day of medication for a child weighing 15 kg. What is the total daily dose?
a) 300 mg
b) 350 mg
c) 400 mg
d) 450 mg
Answer: d) 450 mg
Insulin and Heparin Calculations
A patient is prescribed 40 units of insulin. The vial contains 100 units/mL. How many mL should be drawn?
a) 0.2 mL
b) 0.4 mL
c) 0.6 mL
d) 0.8 mL
Answer: b) 0.4 mL
A heparin drip is ordered at 1,200 units/hr. The IV bag contains 25,000 units in 500 mL. What is the flow rate in mL/hr?
a) 20 mL/hr
b) 24 mL/hr
c) 30 mL/hr
d) 36 mL/hr
Answer: b) 24 mL/hr
Miscellaneous Medication Calculations
A doctor orders 50 mg of a medication. The vial contains 25 mg/mL. How many mL should be administered?
a) 1 mL
b) 2 mL
c) 3 mL
d) 4 mL
Answer: b) 2 mL
A prescription is written for 375 mg of an antibiotic. The pharmacy provides 125 mg/5 mL suspension. How many mL should be given?
a) 5 mL
b) 10 mL
c) 15 mL
d) 20 mL
Answer: c) 15 mL
Fluid Maintenance Calculations
A patient requires maintenance IV fluids at 3 mL/kg/hr. If they weigh 60 kg, how much fluid should they receive per hour?
a) 150 mL/hr
b) 180 mL/hr
c) 200 mL/hr
d) 240 mL/hr
Answer: b) 180 mL/hr
A 2-year-old child requires maintenance fluids at 4 mL/kg/hr. The child weighs 12 kg. How much fluid is required per hour?
a) 24 mL/hr
b) 36 mL/hr
c) 48 mL/hr
d) 60 mL/hr
Answer: c) 48 mL/hr
If you find health calculation questions challenging, it often helps to strengthen your core calculation skills first.
Many students benefit from reviewing nursing math fundamentals practice before attempting advanced health calculation problems.