I discovered the Letts Wizard Whimstaff series (to support literacy and numeracy in the National Curriculum) a few years ago, and have been a fan ever since. My son does not find Maths easy. These books present the concepts in a fun and imaginative way, giving lots of practice. Both my children (aged 8 and 5) volunteer to do these workbooks, and are delighted to get their stickers at the end of each double-page. There is also a certificate or trophy for them to put stickers on at the back of the book. Very good value.
My girls enjoyed this series of learning books. We are just getting to this book and it appears to as engaging as the others. The pictures/graphic engages the children and the variety in tasks engaged them. Pleased and would recommend