# The United States Calculator: Or, Arithmetic Simplified, in Dollars and Cents, Adapted to the Commerce of the United States ... in a Series of Lectures, Comprising the Analytical and Synthetical Methods of Demonstration, Designed for Schools and Academies

F. Lucas, jr., 1841 - 280 páginas

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### Contenido

 Addition 18 Multiplication 34 Mental Operations 40 Calculation of Bills 46 LECTURE IV 54 Division 61 Properties of Numbers 79 Decimals 90
 Addition of Compound Numbers 129 Division of do do 136 Decimal Fractions 143 Practical Arithmetic 164 Exchange 209 Sterling money reduced to dol 221 Involution 227 Well known principles assumed 233

 Subtraction of Decimals 96 LECTURE VII 104
 Annuities 239

### Pasajes populares

Página 150 - Multiply the whole number by the numerator of the fraction, and divide the product by the denominator.
Página 183 - COMPUTE the interest on the principal sum, from the time when the interest commenced to the first time when a payment was made, which exceeds either alone or in conjunction with the preceding payments (if any) the interest at that time due: add that interest to the principal, and from the sum subtract the payment made at that time, together with the preceding payments (if any) and the remainder forms a new principal ; on which, compute and subtract the interest, as upon the first principal: and proceed...
Página 259 - Multiply the half sum and the three remainders continually together, and the square root of the product will be the area required...
Página 147 - Multiply the numerators together for a new numerator, and the denominators together for a new denominator.
Página 248 - Divide the difference of the extremes by the number of terms, less 1, and the quotient will be the common difference. 6. If the extremes be 5 and 605, and the number of terms 151, what is the common difference?
Página 148 - Operations with Fractions A) To change a mixed number to an improper fraction, simply multiply the whole number by the denominator of the fraction and add the numerator.
Página 237 - A, at the end of 8 years, finds himself \$400 in debt ; what is their income, and what does each spend per annum '\ A.
Página 85 - If a straight line be divided into any two parts, the square on the whole line is equal to the squares on the two parts, together with twice the rectangle contained by the parts.
Página 253 - ... above the upper deck"; the breadth thereof at the broadest part above the main wales, half of which breadth shall be accounted the depth of such vessel...
Página 55 - If the lower figure is greater than that, above it, add ten to the upper figure ; from which number so increased, take the lower and set down the remainder, carrying one to the next lower number, with which proceed as before, and so on till the whole is finished.