Recommendations for Year 8 maths help books - for a child that struggled with Maths

[supersun23]

Any recommendations? I'm looking for one that explains each math 'rule', rather than exercises. For example, what is the distributive law, how to do a percentage etc.. Tia

The Carol Voderman help your kid with maths book was useful here, not specifically for year 8

www.worldofbooks.com/en-gb/products/help-your-kids-with-maths-book-carol-vorderman-9781405322461?sku=GOR004460482&gad_source=1&gad_campaignid=19553277260&gbraid=0AAAAADZzAIAbL3Qc-fwvby_7idnRlZQwE&gclid=Cj0KCQiAxonKBhC1ARIsAIHq_lsYrieMF0jx3jiDU-ugmzVi7A74dfK01ppE7ExsNLOcx6IzkHo1T_IaAmbLEALw_wcB