FTCE General Knowledge Math Practice Test

What conversion factor relates grams, kilograms, and pounds?

1. 1 kg = 2.2 lb

2. 1 lb = 2.5 kg

3. 2 kg = 1 lb

4. 1 kg = 1000 lb

The correct answer is: 1 kg = 2.2 lb

The conversion factor that correctly relates kilograms and pounds is that one kilogram is approximately equal to 2.2 pounds. This means that if you have a mass measured in kilograms and you want to convert it to pounds, you multiply by 2.2 to get the equivalent weight in pounds. This conversion factor is widely used and accepted in various fields, including science, cooking, and fitness. The other options do not accurately describe the relationship between grams, kilograms, and pounds. For example, a pound is not equivalent to 2.5 kilograms, nor is 2 kilograms equal to 1 pound. Additionally, the assertion that 1 kilogram equals 1000 pounds is incorrect; a kilogram is much lighter than 1000 pounds. Thus, the correct relationship between kilograms and pounds is effectively captured by the conversion of 1 kg to approximately 2.2 lb.