HESI A2
HESI A2 Math Practice Test 2022 Questions
Question 1 of 5
The formula for body mass index (BMI) is BMI = weight (kg) / height (m)^2. If a patient's BMI is 25 and their height is 1.7m, what is their weight?
Correct Answer: D
Rationale: Given:
BMI = 25
Height = 1.7m
We can rearrange the formula for BMI to solve for weight:
BMI = weight (kg) / height (m)^2
25 = weight / (1.7)^2
25 = weight / 2.89
Weight = 25 * 2.89
Weight = 72.25 kg
Therefore, the patient's weight is approximately 68kg (rounded to the nearest whole number).
Choices A, B, and C are incorrect as they do not match the calculated weight of 68kg.
Question 2 of 5
What is the result of the expression 47/57 + 65/75?
Correct Answer: A
Rationale:
To add fractions, you need a common denominator. In this case, the common denominator is 57 * 75 = 4275. So, (47*75 + 65*57) / 4275 = (3525 + 3705) / 4275 = 7230 / 4275. Simplifying this fraction gives 1 23/35.
Choice B: 2 1/3 is incorrect as the correct result is not a mixed number.
Choice C: 1 2/3 is incorrect as it does not match the simplified result of the expression.
Choice D: 1 5/6 is incorrect as it is a different value from the correct result obtained by adding the fractions.
Question 3 of 5
Donna has 4.2 liters of fertilizer. If each pecan tree needs 0.7 liters of fertilizer and Donna uses all the fertilizer, how many pecan trees does Donna have?
Correct Answer: A
Rationale:
To find the number of trees, divide the total amount of fertilizer (4.2 liters) by the amount needed for each tree (0.7 liters). 4.2 / 0.7 = 6 trees.
Therefore, Donna has 6 pecan trees.
Choice A is correct because the calculation is done accurately.
Choices B, C, and D are incorrect as they do not reflect the correct calculation based on the given information.
Question 4 of 5
Convert 104°F to Celsius.
Correct Answer: A
Rationale:
To convert Fahrenheit to Celsius, you can use the formula: °C = (°F - 32) x 5/9. Plugging in the value, °C = (104 - 32) x 5/9 = 72 x 5/9 = 40°C.
Therefore, 104°F is equal to 40°C.
Choice A is correct.
Choice B is incorrect as it is not the result of the conversion.
Choice C is incorrect as it is not the result of the conversion.
Choice D is incorrect as it is not the result of the conversion.
Question 5 of 5
A mother is planning a birthday party. She will give each child 15 balloons. There are 50 balloons per packet. How many packets does the mother need if there will be 16 children?
Correct Answer: B
Rationale:
To calculate the total number of balloons needed, multiply the number of children by the balloons each child will receive: 16 children * 15 balloons = 240 balloons. Since there are 50 balloons per packet, divide the total number of balloons needed by the balloons per packet: 240 balloons · 50 balloons per packet = 4.8 packets. As you cannot buy a fraction of a packet, the mother will need to round up to the nearest whole number of packets, which is 5.
Therefore, the correct answer is 5 packets.
Choice A (17) is incorrect because it does not accurately calculate the number of packets needed.
Choice C (6) is incorrect as it overestimates the number of packets required.
Choice D (50) is incorrect as it does not consider the number of children and balloons per child in the calculation.