TEAS Practice Test Math

Correct Answer: D

Rationale: The correct answer is D: 17.8 cm. To convert inches to centimeters, we use the conversion factor 1 inch = 2.54 cm. So, to find the metric equivalent of 7 inches, we multiply 7 by 2.54, which equals 17.78 cm. Rounding to one decimal place gives us 17.8 cm. Explanation for incorrect choices: A: 3.2 cm - This is incorrect as it is too small for the conversion of 7 inches. B: 2.8 cm - This is also too small for the conversion of 7 inches. C: 15.4 cm - This is incorrect as it is close to the correct answer, but not the exact conversion based on the given conversion factor.

Correct Answer: C

Rationale: The correct answer is C because it demonstrates a negative correlation between two variables. As tennis balls age, they tend to have less bounce, indicating that an increase in one variable (age) leads to a decrease in the other variable (bounce). This negative correlation shows an inverse relationship between the age of the tennis balls and their bounce level. Choices A, B, and D do not demonstrate a negative correlation as they either show a positive correlation or do not show a correlation at all between the variables mentioned.

Correct Answer: C

Rationale: To convert a percentage to a decimal, you divide by 100. In this case, 87.5% divided by 100 is 0.875. Therefore, choice C, 0.875, is the correct decimal form of 87.5%. Choices A and B are incorrect as they do not represent the correct decimal value. Choice D, 8.75, is also incorrect as it is the decimal form of 875%.

Correct Answer: A

Rationale: To simplify 3.45 * 0.53, multiply the numbers together: 3.45 * 0.53 = 1.8285 (Answer A). This is correct because when multiplying decimals, you multiply as if they were whole numbers and then place the decimal point in the answer based on the total number of decimal places in the factors. Summary of other choices: B: 18.285 - Incorrect as it is the result of adding the two numbers. C: 0.18285 - Incorrect as it is the result of placing the decimal point incorrectly. D: 182.85 - Incorrect as it is the result of ignoring the decimal places in the factors.

Correct Answer: C

Rationale: To convert milliliters to liters, divide by 1000 since there are 1000 mL in 1 L. Here, 2500 mL ÷ 1000 = 2.5 L. Therefore, the correct answer is C (2.5 L). Choice A (0.25 L) is incorrect because the decimal point is in the wrong place. Choice B (25 L) and D (250 L) are incorrect as they are significantly higher than the actual conversion.