HESI A2 Math Portion

HESI A2 Math Portion Related

Review HESI A2 Math Portion related questions and content

A patient's oxygen flow rate is set at 4 liters per minute. How many cubic centimeters of oxygen are delivered per minute?

  • A. 400 cubic centimeters
  • B. 4,000 cubic centimeters
  • C. 40,000 cubic centimeters
  • D. 400,000 cubic centimeters
Correct Answer: B

Rationale: 1 liter is equal to 1,000 cubic centimeters. Therefore, when the oxygen flow rate is 4 liters per minute, the calculation is 4 x 1,000 = 4,000 cubic centimeters. Hence, at a flow rate of 4 liters per minute, 4,000 cubic centimeters of oxygen are delivered per minute. Choice A, 400 cubic centimeters, is incorrect because it miscalculates the conversion from liters to cubic centimeters. Choices C and D, 40,000 cubic centimeters and 400,000 cubic centimeters, respectively, are significantly higher than the correct answer due to incorrect conversions or additional errors in calculation.

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What time is 6:30 A.M. in military time?

  • A. 0630
  • B. 6030
  • C. 1503
  • D. 1530
Correct Answer: A

Rationale: Military time uses a 24-hour clock format where the hours range from 00 to 23. In this format, 6:30 A.M. is expressed as 0630. Choice B (6030) and Choice C (1503) are incorrect as they do not follow the 24-hour clock format. Choice D (1530) represents 3:30 P.M., not 6:30 A.M.

A child's toy block is a cube with side lengths of 5cm. What is its total surface area?

  • A. 25 sq cm
  • B. 50 sq cm
  • C. 125 sq cm
  • D. 150 sq cm
Correct Answer: D

Rationale: The surface area of a cube is calculated using the formula: 6 * (side length)^2. Substituting the side length of 5cm into the formula, we get: 6 * (5cm)^2 = 6 * 25cm^2 = 150 sq cm. Therefore, the total surface area of the toy block is 150 sq cm. Choices A (25 sq cm), B (50 sq cm), and C (125 sq cm) are incorrect as they do not correctly calculate the total surface area of the cube.

Convert this military time to regular time: 2120 hours.

  • A. 9:20 A.M.
  • B. 9:20 P.M.
  • C. 2:12 A.M.
  • D. 2:12 P.M.
Correct Answer: B

Rationale: To convert military time to regular time, subtract 12 from the hours if the time is in the afternoon or evening. In this case, 21 - 12 = 9, so 2120 hours is equivalent to 9:20 P.M. Therefore, the correct answer is option B, 9:20 P.M. Choices A, C, and D are incorrect because they do not correctly adjust the military time to regular time format. Choice A shows 9:20 A.M., which is incorrect as the time is in the evening. Choices C and D show times that are not derived from the given military time, making them incorrect as well.

A cake recipe calls for 2½ cups of flour. How many cups are needed to make 6 cakes?

  • A. 12.5 cups
  • B. 13 cups
  • C. 14 cups
  • D. 15 cups
Correct Answer: D

Rationale: To make one cake, you need 2½ cups of flour. To make 6 cakes, you would need 6 times the amount of flour for one cake, which is 2½ x 6 = 15 cups. Therefore, the correct answer is 15 cups. Choices A, B, and C are incorrect as they do not correctly calculate the total amount of flour needed for 6 cakes.

A patient weighs 180 pounds. What is their weight in kilograms (1kg = 2.2lbs)?

  • A. 68kg
  • B. 75kg
  • C. 82kg
  • D. 90kg
Correct Answer: C

Rationale: To convert pounds to kilograms, you need to divide the weight in pounds by the conversion factor of 2.2 (1kg = 2.2lbs).

180 pounds / 2.2 = 81.82 kg

Rounded to the nearest whole number, the weight of 180 pounds is approximately 82kg. Therefore, the correct answer is 82kg, which is option C. Option B (75kg) is not correct as it is significantly lower than the calculated value. Options A (68kg) and D (90kg) are also incorrect as they do not match the converted weight of 180 pounds.

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