HESI A2
HESI A2 Practice Test Math Questions
Question 1 of 5
What is (12/15) · (3/5) = ?
Correct Answer: A
Rationale:
To divide fractions, you multiply by the reciprocal of the divisor. (12/15) · (3/5) is the same as (12/15) * (5/3). Cancel out common factors to simplify: 12 · 3 = 4, 15 · 5 = 3. So, the expression simplifies to 4/3, which is 1 1/3 in mixed number form.
Choice A, 1 1/3, is the correct answer.
Choices B, C, and D are incorrect because they do not represent the simplified form of the division of the given fractions.
Question 2 of 5
A roast was cooked at 325°F in the oven for 4 hours. The internal temperature rose from 32°F to 145°F. What was the average rise in temperature per hour?
Correct Answer: C
Rationale: The temperature increased from 32°F to 145°F, resulting in a total increase of 145°F - 32°F = 113°F. Dividing this total increase by the 4 hours of cooking time gives an average rise of 113°F · 4 = 28.25°F per hour, which can be rounded to 28°F per hour.
Therefore, the correct answer is 28.
Choice A (20) is incorrect because it does not reflect the actual average rise in temperature per hour.
Choice B (32) is incorrect as it does not consider the total temperature increase and divide it by the total hours.
Choice D (37°F/hr) is incorrect as it does not match the calculated average rise in temperature per hour.
Question 3 of 5
7:5=91:x. Find x.
Correct Answer: A
Rationale:
To solve the proportion 7:5=91:x, cross multiply to get 7x = 5 * 91.
Then, solve for x by dividing both sides by 7, which gives x = 65.
Therefore, the correct answer is x=65.
Choice B, x=55, is incorrect because it does not satisfy the proportion equation.
Choices C and D, x=75 and x=85, are also incorrect as they do not match the calculated value of x when the proportion is solved.
Question 4 of 5
In a class of 25 students, 44% are boys. How many boys are there?
Correct Answer: B
Rationale:
To find the number of boys in the class, calculate 44% of 25 students. 44% of 25 is calculated as follows: 0.44 x 25 = 11 boys.
Therefore, there are 11 boys in the class.
Choice A, 10 boys, is incorrect as it miscalculates the percentage.
Choice C, 9 boys, is incorrect as it is less than 11.
Choice D, 13 boys, is incorrect as it is greater than the correct calculation.
Question 5 of 5
A teacher's aide is preparing a snack for the class. In order to prepare the powdered drink, the aide must convert the directions to metric. The directions say, 'Dilute contents of package in 2 quarts of water.' The aide has a measuring device marked in liters. How many liters of water should be used?
Correct Answer: A
Rationale:
To convert 2 quarts to liters, we can use the conversion factor that 1 quart is approximately equal to 0.95 liters.
Therefore, 2 quarts would be approximately 1.9 liters, which is closest to 2 liters. As the measuring device is marked in liters, the teacher's aide should use 2 liters of water to dilute the contents of the package.
Choice A is correct.
Choice B is incorrect because it's the same as the original amount in quarts.
Choice C is incorrect as it suggests using more water than necessary.
Choice D is incorrect as it suggests using significantly more water than necessary.