Microsoft has released Office for Apple iPad devices. Unlike Apple apps such as Pages and Keynote, Microsoft does charge for Word, Excel, and PowerPoint for the iPad. The goods is that if you already have a subscription to Office 365 whether home or business versions you are entitled to download and install the apps. Just search for Microsoft Office in the Apple App Store and install Word, Excel, PowerPoint, and OneNote.
Documents can be stored in your personal OneDrive or on SharePoint if you have a corporate account. You can later access your documents on your desktop or notebook computer.