Why can adding doubles help you multiply by 2?

Adding doubles can help you multiply by 2 because doubling a number is essentially adding that number to itself. For example, if you want to find 2 times 4, you can think of it as 4 + 4, which equals 8. This method simplifies the process of multiplication for many, especially when dealing with smaller numbers or mental math. By recognizing this relationship, you can quickly calculate the product of any number multiplied by 2.