Convert 1.5 kilometers to meters.

Correct Answer: A

Rationale: To convert kilometers to meters, you need to multiply by 1,000 since there are 1,000 meters in a kilometer. Therefore, 1.5 kilometers is equal to 1,500 meters (1.5 x 1,000 = 1,500). Choice A, '1,500 meters,' is the correct answer. Choice B, '150 meters,' is incorrect as it represents converting 0.15 kilometers to meters. Choice C, '15,000 meters,' is incorrect as it represents multiplying by 10,000 instead of 1,000. Choice D, '1.5 meters,' is incorrect as it doesn't convert the kilometers to meters accurately.

Correct Answer: A

Rationale: To convert grams to kilograms, you need to divide by 1000 since there are 1000 grams in a kilogram. So, 100 grams divided by 1000 equals 0.1 kilograms, making choice A the correct answer. Choices B, C, and D are incorrect because they do not involve the correct conversion factor or calculation. Choice B of 1 kg is the equivalent of 1000 grams, which is 10 times the given value of 100 grams, making it too large. Choice C of 10 kg is 100 times the given value, and choice D of 0.01 kg is 10 times smaller than the correct conversion.

Correct Answer: B

Rationale: To convert centimeters to millimeters, you multiply by 10 since there are 10 millimeters in a centimeter. Therefore, 5 centimeters x 10 = 50 millimeters, making choice A the correct answer. Choice C, '5 mm,' is incorrect as it represents the original quantity in millimeters. Choice D, '500 cm,' is incorrect as it converts the centimeters to centimeters instead of millimeters.

Correct Answer: B

Rationale: In this question, the correct answer is B) 400 cm. This conversion requires understanding the relationship between meters and centimeters in the metric system. To convert meters to centimeters, you need to know that 1 meter is equal to 100 centimeters. Therefore, to find out how many centimeters are in 4 meters, you multiply 4 (meters) by 100 (centimeters in one meter) which equals 400 centimeters. Now, let's analyze why the other options are incorrect: A) 40 cm: This is incorrect because it represents the conversion of 0.4 meters to centimeters, not 4 meters. C) 4 cm: This is incorrect because it is the same value as the original measurement in meters, not a conversion to centimeters. D) 0.4 cm: This is incorrect because it represents a fraction of a centimeter, not the conversion from meters to centimeters. Understanding metric conversions is crucial in various fields, especially in nursing where precise measurements are essential for medication dosages, patient care, and medical procedures. Mastering these conversions ensures accurate and safe practice in healthcare settings.

Correct Answer: D

Rationale: The correct SI conversion for grams (g) to milligrams (mg) is 1 g = 1000 mg, not 100 mg. Therefore, option D is incorrect. Option A is correct as 1 cm is equal to 10 mm, option B is correct as 1 m equals 100 cm, and option C is correct as 1 km is equivalent to 1000 m. Understanding these basic SI conversions is essential for accurate measurements and calculations in various scientific fields.