Singapore Math Challenge, Grade 4+

Using it to prepare for 11+, really helping with more challenging math. The method is nicely explained at the start of the chapter, followed by a good number of exercises to cement the learning.

It’s a very decent book to stimulate new thinking on math. My 8 year old enjoyed doing the exercise very much.

I really liked this product I have been using them for my year 6 students., but I would say they are more suitable for secondary students 11+