Seven is still very young to have the math facts down. We did not do the Kumon Center- it seemed so boring... However, I have my kids do one page a day out of a Kumon book (multiplication, addition, etc). It has really helped with the math facts alot.
I also made (or obviously you can buy) some flashcards. When my older one was 7/8, I would flip them every night for 5 minutes. He has a documented processing disorder and has extended time written into his IEP, but we have never used that.
He's really good at math, and he has the math facts down well. I would not pay too much to the Kumon testing they did- who knows if it's accurate, and maybe it's biased to get you to sign up for their classes. My older one in third grade got an 87th percentile on the (5th grade) CTY math part.
So just work on math facts at home a bit, Kumon worksheets and/or old-fashioned flashcards and that should be enough!
