Very good book, very useful

Very good book, very useful

The mental arithmetic secret: Everyone is able to calculate a wink (Paperback)

Customer Review

Very interested in numbers and math, I bought this book out of curiosity. Soon, I was able to find effective tips that I would not have suspected. The simplicity of understanding this book is disconcerting and so it will be even useful for a person who abhors mental arithmetic. The work is done to facilitate daily life and work, and go into a more reconciled with numbers. I highly recommend

Does not fit for WX-350 !! Rank: 3/5
July 18
Absolutely perfect! Rank: 5/5
January 7
Sits 100% Rank: 5/5
March 6

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