MIRACLE MATH How to Develop a Calculator in Your Head

by Harry Lorayne

educational...math

Genres: Mathematics, Nonfiction, Reference

Unknown Binding

First published July 13, 1992

About the author

Harry Lorayne was an American mnemonist, magician, and author. He was well known for his incredible memory demonstrations and appeared on numerous television shows. His card magic, especially his innovations in card sleights, is widely emulated by amateur and professional magicians.

Reviews

[Cliff Curtis · Rating 4 out of 5]

Another cool book by Harry Lorayne on how to process math problems. I wish I had this when I was in school. I wish my teachers had this when they were teaching me math.

[Sidou · Rating 2 out of 5]

cool

[parp · Rating 2 out of 5]

There were some times where I was like, yeah, I get this, but I doubt anyone is going to use these things unless they read this book ten times. Meh. Still, a good read!

[Elaine · Rating 2 out of 5]

A decent how-to book (i.e. fine and no more), though you'd best get your own copy, and a set of 100 flashcards while you're at it. That's because the author asks you to memorize your addition tables again - this time, in a rather strange manner...

[Dave · Rating 3 out of 5]

In this day and age of calculators, sadly some of the techniques are a little too lengthy to learn to make them usable.
There are, however quick tips for estimating, eg shopping bills, checking addition etc.

[Ram Nag]

good