| BUSINESS ADDITION. +Grouping Method+ and Practical Proof. The only method of PRACTICAL RAPID ADDITION By which a column of figures can be added as quickly as a sentence of words of the same length can be pronounced. |
Not a collection of special rules and
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practical reckoning easy, simple, and
general in its adaptability to the requirements
of actual business in this busy age. RAPID DISCOUNT AND BOOK-KEEPERS’ SUBTRACTION. |
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| RAPID MULTIPLICATION. A Short and Simple GeneralRule. Look at the illustration and see the difference between the the old and new way. Extra cloth, fine gilt, beautifully illustrated. By mail, post-paid, $1.50 Address the author, Lock Box 507, Chicago. DAVID’S DECIMAL INTEREST RULE. A decided revolution in computing INTEREST and TIME. | THE ADDING METHOD OF DIVISION—NEWMETHODS IN MIXED NUMBERSAND FRACTIONS—NEW DECIMALCONTRACTIONS—PRACTICALMEASUREMENTS OF SURFACES ANDSOLIDS—CHRONOLOGY, OR TIMERECKONING, And a vast number of other original short rules, mathematical data, double-disk perpetual calendar, and labor-saving tables all contained in this new and wonderful book. Do you wish to increase your ability by becoming more RAPID in your daily figuring? If so, send for a copy and learn these SHORT-CUT routes to your answers. |
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Return to [transcriber’s notes]
Typographic corrections:
impotance —> impotence
corrossve —> corrosive
ounoe —> ounce
herd —> herb
remakable —> remarkable
indellible —> indelible
flower —> flour
childen —> children
tranfer —> transfer
maxing —> making
diciduous —> deciduous
proscrastination —> procrastination
cusiness —> business
flowder —> flower
thiir —> their
examins —> examine
Sprupi —> Syrupi x2
or —> of
natual —> natural
Alluminum —> Aluminum
Morhinæ —> Morphinæ
Potasssii —> Potassii
Potassi —> Potassii
Patassii —> Potassii
Postassii —>Potassii
Brown-Sequard —> Brown-Séquard
geletine —> gelatine
competion —> competition
Leibreich —> Liebreich
destilatæ —> destillatæ
‘ n’ —> ‘in’
‘ nch’ —> ‘inch’
‘ earned’ —> ‘learned’
‘ t’ —> ‘it’
‘ orm’ —> ‘form’
‘nam ’ —> ‘name’
14 —> 41
36 —> 35
20 —> 10
Return to [transcriber’s notes]