Metric Conversions for TEAS 7

Correct Answer: A

Rationale: To calculate 0.5 multiplied by 20, you simply multiply 0.5 by 20, which equals 10. The correct answer is A (10). The other choices are incorrect because: B (15) is the result of 0.5 multiplied by 30. C (20) is the original number being multiplied, not the result. D (25) is the result of 0.5 multiplied by 50, not 20.

Correct Answer: B

Rationale: To convert meters to kilometers, we divide by 1,000 since 1 kilometer is equal to 1,000 meters. Therefore, 1,000 meters divided by 1,000 equals 1 kilometer. Hence, the correct answer is B: 1 km. A: 0.1 km - Incorrect. This would be the equivalent of 100 meters. C: 10 km - Incorrect. This would be the equivalent of 10,000 meters. D: 0.01 km - Incorrect. This would be the equivalent of 10 meters.

Correct Answer: B

Rationale: The correct answer is B: 2.54 cm. To convert inches to centimeters, we use the conversion factor 1 inch = 2.54 cm. This conversion factor is based on the definition of an inch and a centimeter. Therefore, 1 inch is equivalent to 2.54 centimeters. Choice A (1.54 cm) is incorrect as it is not the correct conversion factor for inches to centimeters. Choice C (3.54 cm) and Choice D (4.54 cm) are also incorrect as they do not correspond to the accurate conversion of inches to centimeters.

Correct Answer: B

Rationale: To convert liters to milliliters, you multiply by 1000 because 1 liter equals 1000 milliliters. Therefore, 0.09 liters x 1000 = 90 milliliters. The correct answer is B. Choice A is incorrect as it does not convert liters to milliliters. Choice C is incorrect as it is 10 times the correct answer. Choice D is incorrect as it is 1/10 of the correct answer.

Correct Answer: A

Rationale: The correct answer is A: King Hector Died By Drinking Chocolate Milk. This mnemonic stands for kilo, hecto, deka, base unit, deci, centi, milli - the order of metric prefixes. It helps remember the order and conversion factors for metric units. Choice B is irrelevant and does not relate to metric conversions. Choice C is too general and does not provide a specific mnemonic for metric conversions. Choice D does not provide any helpful information or mnemonic for recalling metric conversions.