These are some good books written for kids that hate math, i think they will like it:
- Short stories for kids who hate math. (https://amzn.to/2sZ68gR)
- The i hate mathematics book. (https://amzn.to/2G2GxMM)
Most children hate math because it's just boring theory. The way something is taught can make a difference. For example do a math quiz where they can win a small price, and it will be a lot more interesting to them...