Practice HESI A2 Math Test - Nurselytic

Correct Answer: A

Rationale:
To convert a percentage to a decimal, you divide by 100. In this case, 38% divided by 100 equals 0.38. Moving the decimal point two places to the left converts the percentage to a decimal.
Choice B is incorrect because it incorrectly moves the decimal point one place to the left.
Choice C is incorrect as it moves the decimal point three places to the left.
Choice D is incorrect as it does not convert the percentage to a decimal.

Correct Answer: A

Rationale:
To find 18% of 600, you multiply 600 by 0.18, which equals 108. Since 108 is already a whole number, when rounding to the nearest whole number, it remains the same.

Choices B, C, and D are incorrect as they do not represent the correct calculation for finding 18% of 600.

Correct Answer: D

Rationale:
To find the total perimeter, we first calculate the perimeter of the semicircle, which is half of a full circle, so the formula is π * radius. For the semicircle with a radius of 2m, the perimeter is approximately 3.14 * 2m = 6.28m. Next, we calculate the perimeter of the rectangular section by adding twice the length and twice the width (2 * length + 2 * width). For the rectangle with dimensions 5m by 3m, the perimeter is 2 * 5m + 2 * 3m = 10m + 6m = 16m. Finally, we sum the perimeters of the semicircle and the rectangle to get the total perimeter: 6.28m + 16m = 22.28m. Rounding to the nearest meter, the total perimeter is approximately 22m.
Therefore, the correct answer is 22m.

Choices A, B, and C are incorrect as they do not accurately calculate the total perimeter of the playground fence.

Correct Answer: C

Rationale:
To find the difference between 15.7 and 9.8, you need to subtract 9.8 from 15.7. This operation results in 5.9.
Therefore, the correct answer is 5.9.
Choice A, 6.1, is incorrect as it represents the result of subtracting 9.8 from 15.9, not 15.7.
Choice B, 8.96, is also incorrect as it is not the correct result of the subtraction provided.
Choice D, 4.30, is incorrect as well, as it is not the result of subtracting 9.8 from 15.7.

Correct Answer: A

Rationale:
To determine how much money the shopper has left, add the amounts spent: $75.64 + $22.43 = $98.07.
Then, subtract the total spent from the starting amount: $100.00 - $98.07 = $1.93 left.
Therefore, choice A, $1.93, is the correct answer.
Choice B, $5.00, is incorrect because it does not reflect the correct calculation.
Choice C, $0.72, is incorrect as it does not consider the total amount spent.
Choice D, $20.13, is incorrect because it does not reflect the remaining amount after the expenses.