Rapid Math Without a Calculator

Εξώφυλλο
Citadel Press, 2006 - 120 σελίδες
Collins shows readers how to do arithmetic and mathematical calculations in their heads, without recourse to a calculator. With minimum application of the hints, strategies and shortcuts contained within, anyone can attain proficiency in rapid math calculation, including addition, subtraction, multiplication , division and working with fractions.

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Περιεχόμενα

What Arithmetic Is
1
Rapid Addition
16
Rapid Subtraction
28
Short Cuts in Multiplication
35
Short Cuts in Division
56
Short Cuts in Fractions
64
Extracting Square and Cube Roots
74
Useful Tables and Formulas
80
Magic with Figures
98
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