Rigidity preventing learning

[Anonymous]

Set an accuracy target—85-90 percent. Do regular drills. Your child can compute any way he wants, but he has to meet the accuracy target on three consecutive practice exercises before you’ll move on from the drills.

Often, bright kids will stay stuck in a habit until the material gets challenging enough that it requires a different approach.

[Anonymous]

I find that when I can logically reason with my kid and explain why my way is better, it helps a lot.

Does he understand what the regrouping is actually doing? Does he have a strong number sense? Does he understand number placement?
If not, I would start there.

[Anonymous]

I would outsource this to the teacher - I often tell teachers/coaches "it needs to come from you, not me"