# The Teachers' Assistant: Or a System of Practical Arithmetic

M'Carty & Davis, 1824 - 198 páginas

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### Contenido

 NUMERATION 9 Simple Multiplication 16 Federal Money 22 Compound Subtraction 49 Compound Addition 55 Compound Reduction 66 The Single Rule of Three 72 The Double Rule of Three 80
 Tare and Tret 95 Involution 155 A general rule for extracting the roots of 162 Position 168 Geometrical Progression 174 Annuities at Compound Interest 181 Perpetuities 187

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Página 2 - An Act supplementary to an Act, entitled, " An Act for the Encouragement of Learning, by securing the Copies of Maps, Charts, and Books, to the Authors and Proprietors of such Copies during the times therein mentioned," and extending the benefits thereof to the arts of designing, engraving, and etching historical and other prints.
Página 172 - Divide the difference of the extremes by the number of terms, less 1, and the quotient will be the common difference.
Página 2 - Co. of the said district, have deposited in this office the title of a book, the right whereof they claim as proprietors, in the words following, to wit : " Tadeuskund, the Last King of the Lenape. An Historical Tale." In conformity to the Act of the Congress of the United States...
Página 142 - Then multiply the second and third terms together, and divide the product by the first term: the quotient will be the fourth term, or answer.
Página 190 - Feet multiplied by feet, give feet. Feet multiplied by inches, give inches. Feet multiplied by seconds, give seconds. Inches multiplied by inches, give seconds.
Página 170 - ... cents for every day he was idle ; at settlement he received 5 dollars. How many days did he work, and how many days was he idle ? Ans.
Página 127 - Thirty days after sight of this my first of exchange, second and third of like tenor and date not paid, pay to Samuel Sims, or order, four hundred and fifty-two pounds, ten shillings and sixpence sterling, value received, which place to account of Peter Simpson.
Página 99 - RULE.* Multiply the principal by the 'rate per cent, and divide the product by 100: the quotient will be the interest for 1 year.
Página 157 - Subtract the square number from the left hand period, and to the remainder bring down the next period for a dividend.
Página 149 - ... in the first figures of the dividend as usual. Let each remainder be a new dividend ; and for every such dividend, leave out one figure to the right hand of the divisor, remembering to carry for the increase of the figures cut off, as in contracted multiplication. ' Note. — When there are not so many figures in the divi...