HESI A2 Math Practice Exam

Correct Answer: C

Rationale: The correct answer is C: 30.48 cm. The conversion factor for feet to centimeters is 1 foot = 30.48 cm. To convert feet to centimeters, you multiply the number of feet by 30.48. Therefore, there are 30.48 cm in a foot. Choice A (30 cm) and Choice B (31.5 cm) are incorrect because they do not accurately represent the conversion factor from feet to centimeters. Choice D (35 cm) is also incorrect because it is not the standard conversion factor for feet to centimeters. Be sure to use the correct conversion factor of 30.48 cm when converting between feet and centimeters.

Correct Answer: C

Rationale: To calculate the total area to paint, we need to find the surface area of the walls and the floor separately. The surface area of the walls is 2*(8+5)*2 = 36 sq m. The floor area is 8*5 = 40 sq m. Adding these together gives 36 + 40 = 76 sq m. Since one can of paint covers 10 sq m, we need 76/10 = 7.6 cans of paint. Rounding up to the nearest whole number, we need 8 cans of paint, which is equivalent to 88 sq m. Therefore, the correct answer is C (88 sq m). Choice A (56 sq m) is incorrect as it does not consider the surface area of the floor. Choice B (72 sq m) is incorrect as it miscalculates the total area to paint. Choice D (104 sq m) is incorrect as it overestimates the amount of paint needed.

Correct Answer: A

Rationale: To find the result of 0.003 x 4.23, you multiply the numbers: 0.003 x 4.23 = 0.01269. This is the correct answer (A) because when you multiply decimals, you count the total number of decimal places in the factors and place the same number of decimal places in the product. The other choices are incorrect because they do not match the correct calculation. Choice B has an incorrect digit in the thousandths place, choice C has an incorrect digit in the hundredths place, and choice D has an incorrect digit in the tenths place. Therefore, the correct answer is A, 0.01269.

Correct Answer: D

Rationale: To convert 45 kg to pounds, we use the conversion factor 1 kg = 2.20462 pounds. So, 45 kg * 2.20462 pounds/kg = 99.2079 pounds, which rounds to 110 pounds. Therefore, the correct answer is D. Choice A (10 pounds) is incorrect as it is much lower than the actual conversion. Choice B (100 pounds) is close but slightly lower than the accurate value. Choice C (1,000 pounds) is significantly higher and not a reasonable conversion for 45 kg.

Correct Answer: A

Rationale: To convert ounces to pints, we know that 1 pint is equal to 16 ounces. Therefore, to find how many pints are in 56 ounces, we divide 56 by 16. 56 ÷ 16 = 3.5 pints. So, the correct answer is A: 3.5 pints. Choices B, C, and D are incorrect because they do not accurately represent the conversion of 56 ounces to pints based on the conversion factor of 1 pint = 16 ounces.