HESI A2 Quizlet Math

Correct Answer: A

Rationale: To find 28% of 100, you multiply 100 by 0.28 (28% as a decimal). So, 100 x 0.28 = 28. Therefore, the correct answer is A: 28. Option B (20) is incorrect because it represents 20%, not 28%. Option C (25) is incorrect as it is not the result of calculating 28% of 100. Option D (30) is also incorrect as it represents 30%, not 28% of 100.

Correct Answer: A

Rationale: To calculate the number of diapers needed in a year, we multiply the number of times the baby is changed per day (6) by the number of days in a year (365). So, 6 diapers/day x 365 days/year = 2190 diapers (Choice A). This is the correct answer as it accounts for daily changes throughout the year. Choices B, C, and D are incorrect because they do not accurately calculate the total number of diapers needed based on the given information.

Correct Answer: B

Rationale: To convert 3 1/2 pints to cups, we know that 1 pint equals 2 cups. Therefore, 3 1/2 pints would be 7 cups (3 pints = 6 cups, 1/2 pint = 1 cup). So, the correct answer is B. Choice A (5 cups) is incorrect because it doesn't account for the additional 1/2 pint. Choice C (6 cups) is incorrect as it only considers 3 pints. Choice D (4 cups) is incorrect because it doesn't account for the additional 1/2 pint.

Correct Answer: A

Rationale: To convert kilograms to grams, you need to multiply the number of kilograms by 1000, as there are 1000 grams in 1 kilogram. Therefore, 4 kilograms x 1000 = 4000 grams, which is the correct answer (A). Choices B, C, and D are incorrect because they do not correctly convert 4 kilograms to grams.

Correct Answer: B

Rationale: To find the result of multiplying 10 by 5, we simply perform the operation 10 x 5, which equals 50. This is because multiplication is a repeated addition, so 10 multiplied by 5 is the same as adding 10 together 5 times. Therefore, the correct answer is B. Choice A (65) is incorrect as it is the result of adding 10 and 5, not multiplying. Choice C (45) and D (55) are incorrect as they are not the result of multiplying 10 by 5.