Q: i have imported photos from SD card into ipad 1 using camera connection kit. how do i delete them?

A. Just open picture and tap the trash bin.

B. If you want to delete multiple pictures:

1. tap box with arrow on top right

2. Selete pictures to delete

3. Tap delete

If you can not delete these photos, it is likely they were synced to your iPad via iTunes sync, not transferred via SD card.  If they were synced via iTunes sync, they must be deleted via iTunes sync on the computer you synced them from.

Those pictures must have been synced over.

Remove them from your computer and re-sync.

The links below have instructions for deleting photos.

iOS and iPod: Syncing photos using iTunes

http://support.apple.com/kb/HT4236

iPad Tip: How to Delete Photos from Your iPad in the Photos App

http://ipadacademy.com/2011/08/ipad-tip-how-to-delete-photos-from-your-ipad-in-t he-photos-app

Another Way to Quickly Delete Photos from Your iPad (Mac Only)

http://ipadacademy.com/2011/09/another-way-to-quickly-delete-photos-from-your-ip ad-mac-only

How to Delete Photos from iPad

http://www.wondershare.com/apple-idevice/how-to-delete-photos-from-ipad.html

How to: Batch Delete Photos on the iPad

http://www.lifeisaprayer.com/blog/2010/how-batch-delete-photos-ipad

(With iOS 5.1, use 2 fingers)

How to Delete Photos from iCloud’s Photo Stream

http://www.cultofmac.com/124235/how-to-delete-photos-from-iclouds-photo-stream/

 Cheers, Tom