Calculating double of -10 effectively

Finding the double of a number -10 involves multiplying it by 2. This is because doubling implies having two equal parts, each equal to the original quantity -10. By using multiplication, the calculation becomes straightforward and consistent for any number -10. First, you identify -10 as the starting number. Then, by multiplying -10 by 2, you obtain the resulting value that is exactly twice as large as -10. The expression (-10 * 2) formalizes this process, allowing you to compute the doubled value efficiently. Therefore, the final answer, denoted as -20, is derived directly from this multiplication step.