I remember teaching primary maths home schooling during lockdown. It was horrendous.
What Maths scheme is your child using at school? We used White Rose maths. I really didn't like white rose maths. I remember doing bar graphs, fractions and common denominators.
As it was lockdown, all of the white rose resources were available free online, together with what exactly the child should be covering that week. The resources are no longer free, but they may be available if you pay. Important! You need to follow the same resources and methods as the school uses. I found white rose difficult, because it was completely alien to how I had been taught maths.
I also took out a Twinkl subscription. There's loads and loads of Maths resources on there. We particularly enjoyed the mystery of.... resources. The child has to work through several pages of maths in order to discover who committed a crime. They are given a list of suspects and have to eliminate them by completing various maths exercises. We also completed colouring sheets which involved doing maths to determine the colours needed. Twinkl provides age appropriate resources. I believe that learning should be fun.
We used white rose exercise sheets, with extension exercises built into them. We always did the 'mastery' exercises as well as the ordinary ones. I think the exercises were graded deep, deeper, deepest. I can't remember if they were from Twinkl or provided by the school/white rose.
I believe rock stars times table gets increasingly difficult, don't they move on to division and stuff and random questions? It is important to keep on top of it. You will notice a difference in speed if they stop doing it for a couple of weeks. Is your child a global superstar or rock legend with their own helicopter yet?