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How To Calculate Quickly
How to Calculate Quickly( Full Course in Speed Arithmetic) <> Paperback <> HenrySticker <> DoverPublications
Paperback
Published January 1, 1956
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October 9, 2023
Amazing what you can do quickly with your fingers.
I found the techniques quite handy and just explaining them would amaze people.
You do need to do a little practice, so you look efficient when the need arises in the real world.
From the book:
Arithmetic is a science, but calculation is an art. Science is knowledge – art is a skill.
I found the techniques quite handy and just explaining them would amaze people.
You do need to do a little practice, so you look efficient when the need arises in the real world.
From the book:
Arithmetic is a science, but calculation is an art. Science is knowledge – art is a skill.
Displaying 1 of 1 review