HESI A2 Math Practice

Correct Answer: C

Rationale: To convert ounces to pounds, we know that 16 ounces equal 1 pound. Therefore, to find how many pounds are in 192 ounces, we divide 192 by 16, which equals 12 pounds (Option C). Option A is incorrect as it incorrectly converts 192 ounces to 16 pounds. Option B is incorrect as it miscalculates the conversion. Option D is incorrect as it duplicates Option A.

Correct Answer: A

Rationale: To convert liters to milliliters, you multiply by 1000 since there are 1000 milliliters in 1 liter. So, 5 liters x 1000 = 5000 milliliters. Therefore, the correct answer is A: 5000 milliliters. B: 50 milliliters - This is incorrect as it is the result of dividing 5 liters by 100 instead of multiplying by 1000. C: 500 milliliters - This is incorrect as it is the result of multiplying 5 liters by 100 instead of 1000. D: 0.5 milliliters - This is incorrect as it is the result of dividing 5 liters by 10 instead of multiplying by 1000.

Correct Answer: A

Rationale: To convert kilograms to grams, we need to multiply by 1000 because there are 1000 grams in a kilogram. Therefore, 7 kilograms x 1000 = 7000 grams. Choice A is correct. Choices B, C, and D are incorrect because they do not correctly convert kilograms to grams. B is too small, C is one decimal place off, and D is too large.

Correct Answer: A

Rationale: To subtract fractions, we need a common denominator. In this case, the least common multiple of 6 and 4 is 12. So, 5/6 becomes 10/12 and 3/4 becomes 9/12. Subtracting, 10/12 - 9/12 = 1/12, which is the correct answer (A). The other choices are incorrect because they do not result from the proper subtraction of the fractions using a common denominator. Choice B simplifies to 1/12 but is not the correct calculation. Choice C (1/2) and Choice D (1/8) are unrelated to the subtraction of the given fractions.

Correct Answer: A

Rationale: To express 0.025 as a ratio, we need to convert it to a fraction first. 0.025 as a fraction is 25/1000. Simplifying this gives us 1/40. Therefore, the correct ratio is 1:40. Choice A is correct as it represents the simplified form of 0.025 as a ratio. Choices B, C, and D are incorrect as they do not represent the equivalent simplified ratio of 0.025.