Learning Disability Screening Is It A Learning Disability Or Short Term Memory Loss When The Following Happens?

Is it a learning disability or short term memory loss when the following happens? - learning disability screening

Often when I write something, or someone tells me the memory of one screen to another, I mix. eg. I want to see the numbers: 200,446, write in a window, but when I write it on another window (eg Word) I than 200,466. Or if someone calls me and tells me that my phone number is: 5663433
I write 5663443
Help!