Check numbers in your checkbook are a simple indicator when it comes to recording checks and reconciling your checkbook. You can easily align cleared checks on your bank statement with posted items in your checkbook. Be sure when posting checks to your checkbook that the check number on the printed or handwritten check aligns with the posted check.
For more information on check printing see the article, How to print checks
For more information on posting handwritten checks see the article, How to post handwritten checks