Helpful Score: 1
The post says this is a childrens book but this book will help anyone.
With no math background and no list of rules in your head, you can learn to do things in your head you never thought possible.like figuing a tip, figuring sales tax, gas mileage, etc
With no math background and no list of rules in your head, you can learn to do things in your head you never thought possible.like figuing a tip, figuring sales tax, gas mileage, etc
