Assuming your DC is going to a half decent secondary school then worry not.
It depends on how good the teacher/department is but IME much of year 7 is devoted to getting the basics right.
Some staff actually provide a summary/bullet point check list and if not its a good idea to make one themselves. It can be used when planning a piece of work as well as checking afterwards. They can also add points using targets set when work is marked.
I've no idea which secondary he'll be attending at the moment - his 11+ is this September
- but you're beginning to put my mind at rest, KB, so thanks!