Long Addition Demo

This example demonstrates the long addition process, visually showing the step-by-step addition of digits. Core math concepts include addition operations, digit place values, and vertical calculation methods. The construction summary utilizes the Random command to generate random numbers, text objects (text1-text12) to display calculation steps, a button (button1) to control the process, and variables (b-k) to store intermediate results. Suitable for upper elementary or lower middle school students learning basic arithmetic, or for mathematical teaching demonstrations.