HESI A2 Math Practice Test 2023

Correct Answer: B

Rationale: To subtract mixed numbers, first convert them to improper fractions: 17 2\3 = 53\3 and 8 5\9 = 77\9. Then, find a common denominator, which is 9. Subtracting, you get 53\3 - 77\9 = (53*3 - 77)/9 = (159 - 77)/9 = 82/9. Convert 82/9 back to a mixed number, which is 9 1\9 (choice B). The other choices are incorrect because they do not match the correct result obtained through proper subtraction and conversion. Choice A is incorrect as it does not match the calculated result of 9 1\9. Choice C is incorrect as it does not match the calculated result of 9 1\9. Choice D is incorrect as it duplicates choice A without consideration of the actual calculation.

Correct Answer: C

Rationale: To convert quarts to ounces, we know that 1 quart is equal to 32 ounces. Therefore, to find out how many ounces are in 4.5 quarts, we multiply 4.5 by 32, which equals 144 ounces. So, the correct answer is C (144 ounces). Incorrect Choices: A: 120 ounces - This is incorrect because it does not account for the correct conversion factor of 1 quart to 32 ounces. B: 120 ounces - Same as choice A, incorrect conversion factor used. D: 128 ounces - This is incorrect as it is not the correct result of multiplying 4.5 quarts by 32 ounces per quart.

Correct Answer: D

Rationale: To convert 3/8 to a decimal, divide the numerator (3) by the denominator (8): 3 ÷ 8 = 0.375. The correct answer is D. Choice A (0.25) is the decimal equivalent of 1/4, not 3/8. Choice B is a duplicate of A. Choice C (0.3) is the decimal equivalent of 3/10, not 3/8.

Correct Answer: B

Rationale: To subtract 14.5 - 7.25, align the decimals and perform subtraction. Starting from the right, subtract 5 from 0 (borrow 1 from 4), giving 5. Then, subtract 2 from 4, giving 2. The correct answer is 7.25. Other choices are incorrect because they do not match the result obtained from the subtraction process. Choice A and C are too small, while choice D is too large.

Correct Answer: B

Rationale: To convert from kilograms to grams, you multiply by 1000 since 1 kilogram is equal to 1000 grams. So, 6 kilograms x 1000 = 6000 grams. Therefore, the correct answer is B: 6000 grams. Choice A (600 grams) is incorrect because it doesn't account for the conversion factor of 1000 between kilograms and grams. Choice C (600 grams) is also incorrect as it doesn't reflect the correct conversion. Choice D (60,000 grams) is incorrect as it misinterprets the conversion factor and multiplies incorrectly.