Metric Conversions for TEAS 7

Correct Answer: A

Rationale: Certainly! To express 10^6 m in simpler terms, we need to convert meters to kilometers. 1 kilometer is equal to 1000 meters. Therefore, 10^6 m = 1,000,000 m = 1 km. Option A is correct because 1 kilometer is the equivalent of 10^6 meters. Options B, C, and D are incorrect because they represent larger units of measurement than meters. Megameter is 1,000,000 meters, gigameter is 1,000,000,000 meters, and terameter is 1,000,000,000,000 meters, making them larger than 10^6 meters.

Correct Answer: B

Rationale: To convert milliliters to liters, we must divide by 1000 since there are 1000 milliliters in 1 liter. Therefore, 250 milliliters divided by 1000 equals 0.25 liters (choice B). Choice A is incorrect as it is 10 times the correct answer. Choice C is incorrect as it is 5 times the correct answer. Choice D is incorrect as it is 1/10th of the correct answer. Thus, the correct conversion is 0.25 liters.

Correct Answer: B

Rationale: To convert kilometers to meters, you multiply by 1000 since 1 kilometer is equal to 1000 meters. Therefore, 345 kilometers x 1000 = 345,000 meters. Choice A is incorrect as it doesn't account for the conversion factor. Choice C is incorrect as it adds an extra zero. Choice D is incorrect as it adds two extra zeros. Choice B is the correct answer as it correctly converts 345 kilometers to meters by multiplying by 1000.

Correct Answer: A

Rationale: To convert 0.07 to a fraction, we need to write it as 7/100 since 0.07 is equivalent to 7/100 in fraction form. The correct answer is A (7/100). Choice B (7/50) is incorrect because 0.07 is not equivalent to 7/50. Choice C (7/25) is incorrect as well since it does not represent 0.07. Choice D (7/10) is incorrect because 0.07 is not equal to 7/10. The closest fraction to 0.07 is 7/100, making it the correct answer.

Correct Answer: B

Rationale: To convert 0.1 liters to milliliters, you need to multiply by 1000 since there are 1000 milliliters in 1 liter. So, 0.1 * 1000 = 100 ml, which is the correct answer (B). Choice A (10 ml) is incorrect as it represents 0.01 liters, choice C (1000 ml) is incorrect as it represents 1 liter, and choice D (1 ml) is incorrect as it is too small for 0.1 liters.