Quick(er) calculations : how to add, subtract, multiply, divide, square, and square root more swiftly / Trevor Davis Lipscombe.

Format:

Book

Author/Creator:

Lipscombe, Trevor, author.

Series:

Oxford scholarship online.

Oxford scholarship online

Language:

English

Subjects (All):

Arithmetic--Popular works.

Arithmetic.

Genre:

Popular works.

Physical Description:

1 online resource (192 pages) : illustrations (black and white).

Edition:

First edition.

Place of Publication:

Oxford, England : Oxford University Press, [2021]

Summary:

How fast can you calculate? Would you like to be faster? This book presents the time honored tricks and tips of calculation, from a fresh perspective, to boost the speed at which you can add - whether a couple of numbers, or columns so long an accountant may faint. Find out how to subtract, multiply, divide, and find square roots more quickly.

Contents:

: Preface Introduction Challenge 1: Arithmetical Advice 2: Speedier Sums and Subtractions Interlude I: The Magic of 111,111 3: Accounting for Taste

Adding Columns Quickly Interlude II: Checking, Check Digits, and Casting out Nines 4: Quicker Quotients and Pleasing Products

Multiply and Divide by Specific Numbers Interlude III: Doomsday 5: Calculations with Constraints

Multiply and Divide by Numbers with Specific Properties Interlude IV: Multicultural Multiplication 6: Super Powers

Calculate Squares, Square Roots, Cube Roots, and More 7: Close-Enough Calculations

Quick and Accurate Approximations Interlude V: Approximating the Number of Space Aliens 8: Multiplying Irrationally The Grand Finale Further Reading Appendix I: Calculating Doomsday Appendix II: The Squares from 1 to 100

Notes:

This edition also issued in print: 2021.

Includes bibliographical references and index.

Description based on print version record.

ISBN:

0-19-188722-6

0-19-259400-1

OCLC:

1249475258