1, open ppt, click Insert, and slide number.

2. Check the slide number, and then click Apply All.

Introduction to PowerPoint: Create novel and unique presentations to convey your ideas through beautiful design, rich animation, movie action, 3D models and icons. With the help of intelligent technology, the presentation can be vividly presented with just a few clicks of the mouse. -Create new slides and provide templates for business, teaching, thesis defense, etc. -Open and play 1 1 kinds of presentation documents (including encrypted documents)-Brand-new CPU, providing 30 kinds of smooth animation settings-Supporting editing functions such as text paragraphs, object attribute settings, inserting pictures, audio and video -WPS conference function, supporting multiple devices to play slides simultaneously.