# A Complete System of Commercial Arithmetic, Its Application to the Principal Branches of Commerce According to the Existing Practices of Trade, & Numerous Rules for Facilitating & Performing Mental Calculations: With an App...

E. Wilson, 1837 - 337 páginas

### Comentarios de la gente -Escribir un comentario

No encontramos ningún comentario en los lugares habituales.

### Contenido

 Numeration 1 Tables of Weights and Measures 16 Compound Addition 28 Fractional Multipliers 53 Simple Proportion 65 Practice 71 Draft Tare and Tret 84
 Bills of Parcels 91 Profit and Loss 97 Discount 111 Insurances 117 55 129 Ratios 200

### Pasajes populares

Página 131 - To change a mixed number to an improper fraction, multiply the whole number by the denominator of the fraction and add the numerator.
Página 21 - OF TIME. 60 Seconds = 1 Minute 60 Minutes =± 1 Hour 24 Hours = 1 Day 7 Days = 1 Week 28 Days = 1 Lunar Month...
Página 20 - ... 40 square rods, 1 square rood. 4 square roods, 1 square acre. 640 square acres, 1 square mile. 1 1 . Solid, or Cubic Measure. 1728 solid inches make 1 solid foot. 40 feet of round timber, oi > . . , , 50 feet of hewn timber, Î 1 ton or load...
Página 131 - To reduce an improper fraction to a whole or mixed number, — RULE : Divide the numerator by the denominator ; the quotient will be the whole or mixed number.
Página 21 - Measures. 1728 cubic inches make 1 cubic foot 27 cubic feet - 1 cubic yard...
Página 142 - Rule. — Multiply the numerators together for the numerator of the product, and the denominators together for the denominator of the product.
Página 133 - Multiply all the numerators together for a new numerator, and all the denominators together for a new denominator.
Página 204 - The sum of all the terms. Any three of which being given, the other two may be found.
Página 52 - Multiply the whole number by the numerator of the fraction, and divide the product by the denominator ; or divide the whole number by the denominator of the fraction, and multiply the quotient by the numerator.
Página 18 - LENOTH. 12 inches 1 foot. 3 feet 1 yard. 5J yards 1 rod, pole or perch. 40 poles ..... 1 furlong. 8 furlongs, or 1760 yds.