HESI A2
Practice HESI A2 Math Test Questions
Question 1 of 5
Report all decimal places: 3.7 + 7.289 + 4 =
Correct Answer: A
Rationale: To find the sum, you add the numbers 3.7, 7.289, and 4 together. 3.7 + 7.289 + 4 equals 14.989. The correct answer is 14.989 because it includes all decimal places from the sum of the numbers provided. Choice B (5.226) is incorrect as it doesn't account for the sum of the given numbers. Choice C (15.0) is incorrect as it rounds the sum to the nearest whole number, losing the decimal precision. Choice D (5.012) is incorrect as it doesn't reflect the correct sum of the decimal numbers.
Question 2 of 5
Karen goes to the grocery store with $40. She buys a carton of milk for $1.85, a loaf of bread for $3.20, and a bunch of bananas for $3.05. How much money does she have left?
Correct Answer: B
Rationale: To determine how much money Karen has left, we first calculate the total cost of the items she bought: $1.85 + $3.20 + $3.05 = $8.10. Subtracting this total cost from the initial amount she had, $40 - $8.10 = $31.90 left. Choice A, $30.95, is incorrect as it does not reflect the correct amount left after subtracting the total cost. Choice C, $32.10, is incorrect as it is the total cost of the items she bought, not the amount left. Choice D, $34.95, is incorrect as it does not consider the expenses incurred and subtracted from the initial amount.
Question 3 of 5
Roger's car gets an average of 25 miles per gallon. If his gas tank holds 16 gallons, how far can he drive on a full tank?
Correct Answer: C
Rationale: To calculate the distance Roger can drive on a full tank, multiply the number of gallons in his tank by the average miles per gallon his car gets. 16 gallons x 25 miles per gallon = 400 miles. Therefore, Roger can drive 400 miles on a full tank. Choice A (41 miles) is incorrect as it does not consider the tank's full capacity. Choice B (100 miles) is incorrect as it does not account for the full tank's capacity and the average miles per gallon. Choice D (320 miles) is incorrect as it miscalculates the total distance based on the given information.
Question 4 of 5
Solve for x: 3:2 :: 24:x
Correct Answer: A
Rationale: To solve the proportion 3:2 :: 24:x, we set up the equation 3/2 = 24/x. Cross multiply to get 3x = 48, then divide by 3 to find x = 16. Therefore, the correct answer is 16. Choice B (12) is incorrect as it does not satisfy the proportion. Choice C (2) is incorrect as it does not match the relationship between the numbers given. Choice D (22) is incorrect as it is not the solution to the proportion equation.
Question 5 of 5
Solve for x: 7:42 :: 4:x
Correct Answer: B
Rationale: In this pharmacology question on the HESI A2 Math Test, the ratio provided is 7:42. To solve for x in the proportion 7:42 :: 4:x, we need to find a number that, when multiplied by 4, gives the same ratio as 7:42. To determine the correct answer, we can set up a proportion: 7/42 = 4/x. Cross-multiplying gives us 7x = 42*4, which simplifies to 7x = 168. Solving for x, we get x = 168/7 = 24. Therefore, option B (24) is the correct answer. Option A (16) is incorrect because if we substitute 16 for x in the proportion 4:x, it does not give us the same ratio as 7:42. Similarly, option C (48) and option D (12) do not satisfy the proportionality requirement. Educationally, this question assesses the student's understanding of ratios and proportions, which are essential in pharmacology for calculating drug dosages, concentrations, and dilutions accurately. By mastering these math skills, students can ensure patient safety by administering the correct medication doses.