My DS will write every number backwards ... every one. over and over and over. I volunteer at his class (and volunteered in his kindergarten class last year) and none of the other children do it as much and as extremely as my DS So making him go back a re-write them means he has to re-do the entire sheet (usually 4 sheets for which he was suppose to have help from a scribe in the first place). Which means way more writing, which is physically hard on him. His OT evals and Bender Gesalt put him delayed by 2 years on writing.
