Maths on the Back of an Envelope - Clever Ways to (Roughly) Calculate Anything Suclass Code_ECH61 Rogers offers often surprising observations

Rogers offers often surprising observations on how the  world works – and what trends he sees in the future

To get through the year

Bear's instantly inspiring tales from his adventures in all four corners of the globe include his personal life lessons you will never forget

methods and resources to increase productivity and enhance their skills

lost the chance to become Prime Minister and ended up as Foreign Secretary

Maths on the Back of an Envelope - Clever Ways to (Roughly) Calculate Anything Suclass Code_ECH61 Rogers offers often surprising observationsAn entertaining introduction to the art of estimation providing arithmetical techniques to tackle problems ranging from everyday conversations to environmental issues.