Y7 Online maths or books

[CullersLane]

Ds is generally bright and doing well in maths, probably in the top 10% in primary school without putting too much effort in it.

In year 7 he now averages at around 73% and I know he could do better if he practiced more.

Please could anyone recommend a good online programme or books that would help him become more confident and faster? He was in the accelerated maths group in year 6 and his class teacher said he is a capable mathematician.

I don't know anything at all about online maths services or which books really do help.

Help!?

5 aday math is really good, it has the questions and the answers. it will take little time and let him try it . It starts with a numeracy level but you can go higher if he is finding it easy.
https://corbettmaths.com/5-a-day/gcse/

higher ( I didn't mean higher level but the next level which is foundation)

Seneca - free version is ok although there is a paid version too. DS school used free version to set homework on it too.