You can change the settings on the iPad so that if you buy a song or app…
iPad Basics Part 13 – Splitting and Merging your Keyboard on iPad
The iPad has the ability to split the keyboard to make it easier to type with your thumbs. This can make it a lot easier if you have to stand while using your iPad.
You have to go to your iPad settings to enable the split keyboard first, but once you have done that you can split and merge your keyboard directly from the bottom at the bottom right corner of your keyboard.