TEAS Practice Math Test

Correct Answer: C

Rationale: The mean time for the women who ran the 200m event at the 2008 Olympic Games can be calculated by summing all the times and dividing by the total number of times. Sum of times = 22.33 + 22.50 + 22.50 + 22.61 + 22.71 + 22.72 + 22.83 + 23.22 = 182.42 Total number of times = 8 Mean time = 182.42 / 8 = 22.8025 ≈ 22.68 sec (Choice C) Therefore, the correct answer is C (22.68 sec) as it is the closest to the calculated mean time. Incorrect choices: A: 22.50 sec - This is not the mean of the given times. B: 22.66 sec - Not the mean. D: 22.77 sec - Not the mean.

Correct Answer: C

Rationale: To convert meters to centimeters, we know that 1 meter is equal to 100 centimeters. So, to find how many centimeters are in 7 meters, we multiply 7 by 100, which equals 700 centimeters. Therefore, the correct answer is C. Choice A is incorrect because it doesn't account for the conversion factor between meters and centimeters. Choice B is incorrect as it only considers 1 meter as 10 centimeters instead of 100. Choice D is incorrect as it overestimates the conversion, as 7 meters is not equal to 7000 centimeters.

Correct Answer: A

Rationale: The correct answer is A: x + 4 = (1/3)y - 2. To break down the equation: 1. "Four more than a number, x" can be represented as x + 4. 2. "2 less than 1/3 of another number, y" can be represented as (1/3)y - 2. 3. Combining the two expressions gives x + 4 = (1/3)y - 2, which correctly represents the given sentence. Other choices are incorrect because they do not accurately capture the relationship between x and y as described in the sentence. Choice B incorrectly sets 4x equal to 2 minus 1/3 of y, while choices C and D have incorrect signs and placements of terms.

Correct Answer: C

Rationale: To calculate what Erma will spend, we first find the cost of the cheaper sweater after the discount, which is $44 - (25% of $44) = $44 - $11 = $33. Then, we add the cost of the more expensive sweater, which remains at $50. Therefore, Erma will spend $33 + $50 = $83. The correct answer is C. Option A is incorrect because it does not consider the discount on the cheaper sweater. Option B is incorrect as it underestimates the total cost by not factoring in the discount. Option D is incorrect as it overestimates the total cost by not considering the discount on the cheaper sweater.

Correct Answer: D

Rationale: To convert grams to milligrams, you need to multiply by 1000 because 1 gram = 1000 milligrams. Therefore, to find how many milligrams are in 5 grams, you would multiply 5 grams by 1000, resulting in 5000 milligrams. Option D is correct. Option A is incorrect as it represents a conversion from grams to micrograms, not milligrams. Option B is incorrect as it is a tenth of the correct answer. Option C is incorrect as it is only a hundredth of the correct answer.