HESI Mathematics

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A healthcare professional is reviewing the daily intake and output (I&O) of a patient consuming a clear diet. The drainage bag denotes a total of 1,500 mL for the past 24 hours. The total intake is: 3 6oz cups of coffee, 1 16-oz serving of clear soup, and 2 pints of water consumed throughout the day. How much is the deficit in milliliters?

  • A. 480ml
  • B. 840ml
  • C. 240ml
  • D. 460ml
Correct Answer: A

Rationale: To calculate the fluid deficit, first, convert all fluid intake into milliliters: 3 cups of coffee x 180ml/cup = 540ml, 1 serving of clear soup x 480ml/serving = 480ml, and 2 pints of water x 480ml/pint = 960ml. Total fluid intake = 540ml + 480ml + 960ml = 1980ml. Given that the patient's output is 1500ml, the fluid deficit is calculated as 1980ml intake - 1500ml output = 480ml deficit. Therefore, the correct answer is 480ml.

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Compare the relationships of these numbers: 0.25 is _______ to 25%.

  • A. equal
  • B. greater
  • C. less
  • D. not comparable
Correct Answer: A

Rationale: 0.25 is equivalent to 25% because they represent the same value in different forms. 0.25 is the decimal representation of 25% (0.25 = 25/100), making them equal in value. When comparing these two numbers, they are not greater or lesser than each other; they are exactly the same amount, just expressed differently. Therefore, the correct answer is 'equal' as 0.25 and 25% are essentially the same numeric value in different formats, demonstrating an equal relationship between them.

Convert 7/10 to a decimal.

  • A. 0.7
  • B. 0.07
  • C. 0.0007
  • D. 0.007
Correct Answer: A

Rationale: To convert a fraction to a decimal, divide the numerator by the denominator. In this case, 7 · 10 = 0.7. Dividing by 10 shifts the decimal point one place to the left, making the conversion straightforward. Therefore, the correct decimal form of 7/10 is 0.7.

5 ½ divided by 2 ½ =

  • A. 2 3/4
  • B. 2 1/5
  • C. 2
  • D. 2 1/2
Correct Answer: B

Rationale: Correct Answer: B (2 1/5)

Rationale: Convert mixed numbers to improper fractions: 5 ½ = 11/2, 2 ½ = 5/2. Perform division: (11/2) ÷ (5/2) = 11/2 x 2/5 = 22/10 = 2 2/10 = 2 1/5.

Summary:
A: Incorrect, as it is equivalent to 2 3/4.
C: Incorrect, as it is a whole number and doesn't represent the result of the division.
D: Incorrect, as it is the initial divisor, not the result of the division.

A healthcare professional works in a military hospital from 1300 to 2000. What time of day does this healthcare professional work?

  • A. Early morning to early afternoon
  • B. Lunchtime to midnight
  • C. Early afternoon to bedtime
  • D. Midnight to sunrise
Correct Answer: C

Rationale: The military time of 1300 to 2000 corresponds to 1:00 PM to 8:00 PM. The healthcare professional works during this time frame from early afternoon to bedtime.

A newborn weighs 8 pounds 5 ounces. There are 453.59 grams per pound. What is the infant's weight in grams?

  • A. 2268 grams
  • B. 3629 grams
  • C. 3770 grams
  • D. 3856 grams
Correct Answer: C

Rationale: To find the infant's weight in grams, first convert 8 pounds to grams by multiplying 8 pounds by 453.59 grams per pound, which equals 3628.72 grams. Then, convert 5 ounces to grams by multiplying 5 ounces by 28.35 grams per ounce, which equals 141.75 grams. Finally, add these two results together: 3628.72 grams + 141.75 grams = 3770 grams. Therefore, the infant's weight is 3770 grams, making choice C the correct answer.

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