HESI A2
HESI A2 Math Portion Questions
Question 1 of 5
Express 4/5 as a percent.
Correct Answer: D
Rationale:
To convert a fraction to a percentage, you multiply the fraction by 100.
To express 4/5 as a percent, you perform the calculation 4/5 * 100 = 80%.
Therefore, the correct answer is D, 80%.
Choices A, B, and C are incorrect as they do not represent the correct conversion of 4/5 to a percentage.
Question 2 of 5
What is the result of dividing 152 by 2?
Correct Answer: C
Rationale:
To divide 152 by 2, you perform the division operation, which is 152 · 2 = 76. The correct answer is 76.
Choices A, B, and D are incorrect.
Choice A, 0.0116, is the result of dividing 1 by 152 instead of 152 by 2.
Choice B, 0.116, is the result of dividing 1.52 by 2.
Choice D, 11.6, is the result of multiplying 152 by 2.
Question 3 of 5
If the outside temperature is currently 15 degrees on the Celsius scale, what is the approximate temperature on the Fahrenheit scale?
Correct Answer: A
Rationale:
To convert Celsius to Fahrenheit, you can use the formula: (°C 9/5) + 32 = °F. Substituting 15°C into the formula gives us (15 9/5) + 32 = 59°F.
Therefore, the approximate temperature on the Fahrenheit scale for 15 degrees Celsius is 59 degrees Fahrenheit.
Choice B, C, and D are incorrect as they do not align with the correct conversion formula and calculation.
Question 4 of 5
In his stamp collection, Bruno has 15 more stamps from Europe than from Africa, and 18 more stamps from Asia than from Africa. If he has 27 stamps from Europe, how many Asian stamps does he have?
Correct Answer: C
Rationale: Since Bruno has 27 stamps from Europe, which is 15 more than from Africa, he must have 27 - 15 = 12 stamps from Africa. Since he also has 18 more stamps from Asia than from Africa, he must have 12 + 18 = 30 stamps from Asia.
Therefore, Bruno has 30 Asian stamps.
Choice A (12) is the number of stamps Bruno has from Africa, not Asia.
Choices B (22) and D (40) are not derived from the correct calculations based on the given information.
Question 5 of 5
An ancient Egyptian pyramid has a square base with side lengths of 20 meters and a remaining height (after erosion) of 10 meters. Its original height was 30 meters. What was the volume of the pyramid in its original state?
Correct Answer: A
Rationale:
To find the volume of a pyramid, you can use the formula: Volume = (1/3) * base area * height. In this case, the base area is the square of side length 20 meters, which is 20 * 20 = 400 square meters. The original height of the pyramid is 30 meters.
Therefore, the volume of the pyramid in its original state is (1/3) * 400 * 30 = 12000 cubic meters.
Choice A is correct.
Choices B, C, and D are incorrect as they do not correctly calculate the volume using the original height and base area of the pyramid.