# A practical treatise on arithmetic...: Combining the useful properties of former works, with the modern improvements... To which is added two methods of bookkeeping...

Otis, Broaders, and co., 1841 - Mathematics - 340 pages

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### Contents

 Numeration 9 Addition 20 Subtraction 28 Multiplication 35 Division 45 Promiscuous Questions in Addition Subtraction Mul 56 Decimal Fractions 81 Promiscuous Questions in Fractions 93
 Rule of Three Compound 178 Simple Fellowship 185 General Average 192 Promiscuous Questions in Rule of Three Fellowship 203 Gauging 221 Cube Root 233 Specific Gravity 241 The Wheel and Axle 250

 Compound Numbers Tables 104 Reduction of Compound Numbers 110 Addition of Compound Numbers 122 Division of Compound Numbers 128 Percentage 134 Draft and Tare 140 Compound Interest 158 Equation of Payments 164 Rule of Three 170
 The Wedge 257 Progression by Quotient 267 Annuities at Simple Interest 274 Money 280 Coins 287 Weights and Measures 297 BookKeeping 305 Business Forms 320 Signs 333

### Popular passages

Page 246 - These are usually accounted six in number, viz. the Lever, the Wheel and Axle, the Pulley, the Inclined Plane, the Wedge, and the Screw.
Page 66 - To reduce a mixed number to an improper fraction. Multiply the whole number by the denominator of the fraction, and to the product add the given numerator.
Page 329 - Thirty days after sight of this first of exchange (second and third of the same tenor and date unpaid...
Page 157 - Compute the interest to the time of the first payment ; if that be one year or more from the time the interest commenced, add it to the principal, and deduct the payment from the sum total. If there be after payments made, compute the interest on the balance due to the next payment, and then deduct the payment as above; and in like manner from one payment to another, till all the payments are absorbed; provided the time between one payment and another be one year or more.
Page 223 - If the vessel be double-decked, take the length thereof from the fore part of the main stem to the after part of the stern-post above the upper deck; the breadth thereof at the broadest part above the main wales...
Page 262 - There are five things in arithmetical progression, any three of which being given, the other two may be found : — 1st. The first term. ' 2d. The last term. 3d. The number of terms. 4th. The common difference. 5th. The sum of al!
Page 166 - Multiply each debt by its term of credit, and divide the sum of the products by the sum of the debts. The quotient will be the average term of credit.
Page 224 - Thus 4x4=16: the number 16 is the 2nd power or square of 4. If a number be multiplied by itself, and the product arising, be again multiplied by the number, the second product is called the 3rd power, or cube of the number.
Page 209 - The area of a triangle is equal to half the product of its base by its altitude.
Page 158 - ... compute the interest on the principal sum due on the obligation for one year, add it to the principal, and compute the interest on the sum paid, from the time it was paid, up to the end of the year : add it to the sum paid, and deduct that sum from the principal and interest added as above...