Okay, I admit it: There is really no need to balance your checking account by hand. With all of the software and online options available, the ability to maintain your balance with pencil, paper, and calculator is no longer required.
Nonetheless, knowing how to balance your account the old-fashioned way has its advantages. Even if you never plan to do the math yourself, it is valuable to understand what's happening as the software chugs away, so you can more easily resolve problems when they occur.
And they will occur. It happens to everybody sooner or later.
Most bank statements include a worksheet for balancing your account by hand. Give it a try next time you receive your statement, ...