TEAS 7 Math Practice Test

Correct Answer: D

Rationale: The correct answer is D: 0.16%. To find the percentage equivalent of a decimal, we multiply the decimal by 100. So, 0.0016 x 100 = 0.16%. Choice A (16%) is incorrect because it represents the decimal as a whole number, not a percentage. Choice B (160%) is incorrect as it incorrectly multiplies the decimal by 1000 instead of 100. Choice C (1.60%) is incorrect as it incorrectly places the decimal point in the wrong position, resulting in an incorrect percentage value.

Correct Answer: B

Rationale: The correct answer is B: 1 centimeter. The average length of a human eyelash is around 1 centimeter. This length is suitable for protecting the eyes from debris and dust particles while allowing them to function properly. Choice A, 1 nanometer, is far too small for an eyelash. Choice C, 1 meter, and choice D, 1 kilometer, are both significantly longer than the actual length of a human eyelash, making them unrealistic and incorrect options.

Correct Answer: A

Rationale: The correct answer is A: $90. Given the ratio of 1:3 for house savings to rent, and the rent of $270 per month, we can set up a proportion. Let x be the amount saved for the house. The ratio equation is: x/270 = 1/3. Cross-multiplying gives x = 270/3 = $90. Therefore, the roommate saves $90 each month. Choice B: $270 is incorrect because that is the amount of rent paid, not the amount saved for the house. Choice C: $730 is incorrect as it is not derived from the given ratio and rent amount. Choice D: $810 is incorrect as it is also not in line with the ratio and rent information provided.

Correct Answer: D

Rationale: To calculate the increased dosage, we first find 30% of the current dosage: 270 mg x 0.30 = 81 mg. Then, we add this to the current dosage: 270 mg + 81 mg = 351 mg. Therefore, the correct answer is D. Choice A is incorrect as it is less than the current dosage. Choice B is incorrect as it does not account for the increase. Choice C is incorrect as it does not include the correct percentage increase.

Correct Answer: C

Rationale: To find the cost of one box of crackers, we set up a system of equations. Let x be the cost of one container of yogurt and y be the cost of one box of crackers. From the given information, we have: 4x + 3y = 9.55 2x + 2y = 5.90 Solving the system of equations, we find x = 1.45 and y = 2.25. Therefore, one box of crackers costs $2.25, making choice C the correct answer. Incorrect choices: A: $1.75 - Incorrect because it doesn't match the calculated cost. B: $2.00 - Incorrect, as it does not align with the calculated cost. D: $2.50 - Wrong, as it does not correspond to the calculated value.