Finding the double value of -1

To find the double value of -1, start by understanding that doubling a number means multiplying it by 2. Here, -1 stands for the initial number you want to double. The process involves taking this number and multiplying it by 2 to get a new value. The calculation is represented by (-1 * 2), which means you multiply -1 by 2. This operation yields -2, which is exactly twice the size of the original -1. This formula can be applied to any number -1 to quickly find its double, making it a valuable and straightforward arithmetic skill.