Content is OK, but book is poorly formatted for Kindle. While the text can be enlarged, the forumlae and examples are in a graphics format that leave them minuscule. Read morePublished 4 days ago by An Average Joe
Love love love this easy read I've been using it to teach my Son easier ways to apply math. Believe or not someone recommended this off of Instagram lol.. Read morePublished 7 days ago by Mrs.
Cool book, collecting lots of neat little tricks for mental math. Teaches some tricks for speeding up simple calculations and some surprising tricks to make things that seem very... Read morePublished 21 days ago by Feifei Crouch
Very nice book with great tips. Able to amaze my friends with my advanced mental prowess :)Published 27 days ago by Don Delgado
Great book to stimulate your brain. It really opened my eyes and learned things that had never knew. It has improved my math skills quite a lot.Published 1 month ago by Norman Stgeorges