Do you want to double or triple the speed with which you calculate? Can you run a rapid mental check over the results of your calculating machines? Can you check bills worked out for you by grocery store cash registers, on waiters' checks, on department store charge accounts? Or do you simply take their word for the disposal of your money? Don't envy friends who can perform these calculations with lightning speed and complete accuracy. Theirs is not wholly an inborn ability. You can acquire these skills by the methods described in this book. How to Calculate Quickly is a tried and true method for helping you in the mathematics of daily life — addition, subtraction, multiplication, division, and fractions.
The author can awaken for you a faculty which is surprisingly dormant in accountants, engineers, scientists, businessmen, and others who work with figures. This is "number sense" — or the ability to recognize relations between numbers considered as whole quantities. Lack of this number sense makes it entirely possible for a scientist to be proficient in higher mathematics, but to bog down in the arithmetic of everyday life.
This book teaches those necessary mathematical techniques which schools neglect to teach: Horizontal addition, left to right multiplication and division, etc. You will learn a method of multiplication so rapid that you'll be able to do products in not much more time than it would take to write the problem down on paper.
This is not a collection of tricks which work in only a very few special cases; but a serious, capably planned course of basic mathematics for self-instruction. It contains over 9,000 short problems and their solutions for you to work on streetcars, in taxis, at lunch, during spare moments. Five or ten minutes spent daily on this book will, within ten weeks, give you a number sense that will double or triple your calculation speed.

nexusstc/How to Calculate Quickly: Full Course in Speed Arithmetic/a8da6468f30fbaa29ede76afefd2400b.epub

lgli/a8da6468f30fbaa29ede76afefd2400b.epub

lgrsnf/a8da6468f30fbaa29ede76afefd2400b.epub

zlib/Mathematics/Henry Sticker/How to Calculate Quickly: Full Course in Speed Arithmetic_2224441.epub

How to calculate quickly : (the art of calculation) ; [full course in speed arithmetic

The art of calculationHow to calculate quickly :

Sticker, Henry.

Athenaeum of Philadelphia

Dover (New York)

Dover books on elementary and intermediate mathematics, New York, ©1955 [197-? printing

Dover books on elementary and intermediate mathematics, New York, New York State, 1970

Dover books on elementary and intermediate mathematics, 2013

Reprinted with corrections., New York, New York State, 1955

Dover books on mathematics, Nachr, Mineola, NY, ca. 2009

United States, United States of America

INscribe Digital, [N.p.], 2013

reprint, PT, 1955

2, 2013

0

lg1055451

sources:
URN:ISBN:9780486318721

{"edition":"reprint","isbns":["048620295X","9780486202952"],"last_page":192,"publisher":"Dover Publications","series":"Dover Books on Mathematics"}

"Answers": p. 154-185.

Cover title: How to calculate quickly : full course in speed arithmetic
"An unabridged republication, with minor corrections, of the work originally published by Essential Books in 1945 under the title: The art of calculation."

NBuC

topic: Mental arithmetic.

Type: 当代图书

Bookmarks:
1. (p2) The Plan of This Book
2. (p3) ADDITION
2.1. (p3) Addition in General
2.2. (p5) Adding Single Columns by Pairs starts on
2.3. (p22) Adding Single Columns by Trios starts on
2.4. (p42) Mental Addition of Large Numbers starts on
2.5. (p63) Two-Column Addition starts on
3. (p17) SUBTRACTION
3.1. (p17) Subtraction in General
3.2. (p19) Left-to-Right Subtraction starts on
4. (p37) MULTIPLICATION
4.1. (p37) Multiplication in General
4.2. (p56) Direct Multiplication by Numbers Greater than 12 starts on
4.3. (p90) Multiplying Three Figures by One starts on
4.4. (p107) Multiplying Two Figures by Two starts on
4.5. (p123) Multiplying Three Figures by Two starts on
4.6. (p132) Multiplying Three Figures by Three starts on
5. (p72) DIVISION
5.1. (p72) Division in General
5.2. (p79) Direct Division by Numbers Greater than 12 starts on
5.3. (p98) Mental Division of Large Numbers starts on
5.4. (p104) Division by Three Figures starts on
5.5. (p116) Division by Two Figures starts on
6. (p96) FRACTIONS
6.1. (p96) Fractions in General
6.2. (p97) Addition and Subtraction of Fractions stars on
7. (p122) DECIMALS
7.1. (p122) Decimals in General
7.2. (p123) Decimal Equivalents of Fractions starts on
8. (p125) SHORT CUTS
8.1. (p125) Horizontal Addition
8.2. (p127) Combined Addition and Subtraction
8.3. (p130) Multiplying by a Near Number
8.4. (p131) Aliquot Parts in Multiplication
8.5. (p132) Simplifying the Multiplier
8.6. (p134) Multiplication by Factoring
8.7. (p134) Factors between 11 and 19
8.8. (p135) Multiplying by 11
8.9. (p136) Multiplying by 21 31 41 etc
8.10. (p137) Squares of Numbers starts on
8.11. (p139) Multiplying When Corresponding Orders Are Alike starts on
8.12. (p142) Multiplying a Sum by a Difference
8.13. (p142) Multiplications Involving Fractions starts on
8.14. (p143) Aliquot Parts in Division
8.15. (p144) Cubes of Numbers
8.16. (p145) Algebraic Multiplication

theme: Mental arithmetic.

Type: modern

topic: Mental arithmetic

Type: 英文图书

Bookmarks:
1. (p3) ADDITION IN GENERAL
2. (p17) SUBTRACTION IN GENERAL
3. (p37) MULTIPLICATION IN GENERAL
4. (p72) DIVISION IN GENERAL
5. (p96) FRACTIONS IN GENERAL
6. (p122) DECIMALS IN GENERAL
7. (p125) SHORT CUTS

theme: Mental arithmetic

Do you want to double or triple the speed with which you calculate? Can you run a rapid mental check over the results of your calculating machines? Can you check bills worked out for you by grocery store cash registers, on waiters' checks, on department store charge accounts? Or do you simply take their word for the disposal of your money? Don't envy friends who can perform these calculations with lightning speed and complete accuracy. Theirs is not wholly an inborn ability. You can acquire these skills by the methods described in this book. __How to Calculate Quickly__ is a tried and true method for helping you in the mathematics of daily life — addition, subtraction, multiplication, division, and fractions.The author can awaken for you a faculty which is surprisingly dormant in accountants, engineers, scientists, businessmen, and others who work with figures. This is "number sense" — or the ability to recognize relations between numbers considered as whole quantities. Lack of this number sense makes it entirely possible for a scientist to be proficient in higher mathematics, but to bog down in the arithmetic of everyday life.This book teaches those necessary mathematical techniques which schools neglect to teach: Horizontal addition, left to right multiplication and division, etc. You will learn a method of multiplication so rapid that you'll be able to do products in not much more time than it would take to write the problem down on paper.This is not a collection of tricks which work in only a very few special cases; but a serious, capably planned course of basic mathematics for self-instruction. It contains over 9,000 short problems and their solutions for you to work on streetcars, in taxis, at lunch, during spare moments. Five or ten minutes spent daily on this book will, within ten weeks, give you a number sense that will double or triple your calculation speed.

Spending five to ten minutes per day on this book will double or triple your calculation speed within ten weeks!
How to Calculate Quickly is a tried and true method for helping you with the mathematics of daily life addition, subtraction, multiplication, division, and fractions.
The author can awaken for you a faculty that is surprisingly dormant in accountants, engineers, scientists, businesspeople, and others who work with figures. This is "number sense" the ability to recognize relations between numbers considered as whole quantities. Lack of this number sense makes it entirely possible for a scientist to be proficient in higher mathematics, but get bogged down in the arithmetic of everyday life.
This book teaches the necessary mathematical techniques that schools neglect to horizontal addition, left-to-right multiplication, division, etc . You will learn a method of multiplication so rapidly that you'll be able to do products in not much more time than it would take to write the problem down on paper.
This is not a collection of tricks that work in only a very few special cases, but a serious, capably planned course in basic mathematics for self-instruction. It contains over 9,000 short problems and their solutions for you to work on during your spare moments. Five or ten minutes spent daily on this book will, within ten weeks, give you a number sense that will double or triple your calculation speed.

Do you want to double or triple the speed with which you calculate? How to Calculate Quickly is a tried and true method for helping you in the mathematics of daily life - addition, subtraction, multiplication, division, and fractions. The author can awaken for you a faculty which is surprisingly dormant in accountants, engineers, scientists, businesspeople, and others who work with figures. This is "number sense"--Or the ability to recognize relations between numbers considered as whole quantities. Lack of this number sense makes it entirely possible for a scientist to be proficient in higher mathematics, but to bog down in the arithmetic of everyday life. This book teaches those necessary mathematical techniques which schools neglect to teach: Horizontal addition, left to right multiplication and division, etc. You will learn a method of multiplication so rapid that you'll be able to do products in not much more time than it would take to write the problem down on paper. This is not a collection of tricks which would work in only a very few special cases, but a serious, capably planned course of basic mathematics for self-instruction. It contains over 9,000 short problems and their solutions for you to work during spare moments. Five or ten minutes spent daily on this book will, within ten weeks, give you a number sense that will double or triple your calculation speed

Do you want to double or triple the speed with which you calculate? How to Calculate Quickly is a tried and true method for helping you in the mathematics of daily life — addition, subtraction, multiplication, division, and fractions.
The author can awaken for you a faculty which is surprisingly dormant in accountants, engineers, scientists, businesspeople, and others who work with figures. This is "number sense" — or the ability to recognize relations between numbers considered as whole quantities. Lack of this number sense makes it entirely possible for a scientist to be proficient in higher mathematics, but to bog down in the arithmetic of everyday life.
This book teaches the necessary mathematical techniques that schools neglect to teach: Horizontal addition, left to right multiplication and division, etc. You will learn a method of multiplication so rapid that you'll be able to do products in not much more time than it would take to write the problem down on paper.
This is not a collection of tricks that work in only a very few special cases, but a serious, capably planned course of basic mathematics for self-instruction. It contains over 9,000 short problems and their solutions for you to work during spare moments. Five or ten minutes spent daily on this book will, within ten weeks, give you a number sense that will double or triple your calculation speed.

Many useful procedures explained and taught: 2-column addition, left-to-right subtraction, direct multiplication by numbers greater than 12, mental division of large numbers, more. Also numerous helpful shortcuts. More than 8,000 problems, with solutions. 1945 edition

<p><p>Many useful procedures explained and taught&#58; 2-column addition, left-to-right subtraction, mental division of large numbers, more. Also numerous helpful shortcuts. More than 8,000 problems, with solutions. 1945 edition.<p></p>

2013-12-09