We've got the same issues. I think my child actually misspelled his name during his first grade year, and that was hardly a new skill for him! Harder work has definitely helped some, but we still have issues. We're now pursuing an evaluation to look at executive functioning and see what's happening. We have issues where he'll say the answer is 47 but just write, "4" or say that the answer is 300, and leave off all the 0s when he writes the answer.
In other words, I'll be anxiously reading the other replies because I need some input on this issue too.
