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 Βιβλία Βιβλία 1 - 10 από 45 για Hence, when the extremes and the number of terms are given, to find the sum of all.... Hence, when the extremes and the number of terms are given, to find the sum of all the terms, — Multiply £ the sum of the extremes by the number of terms, and the product will be the answer 10. Conkling's Arithmetic: The Young Arithmetician's Guide to a Knowledge of ... - Σελίδα 249
των Thomas Conkling (W.) - 1831 - 275 σελίδες
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο ## The Tutor's Guide: Being a Complete System of Arithmetic; with Various ...

Charles Vyse - 1785 - 325 σελίδες
...three of which being given, the other two may be found. PRO- I « PR-O POSITION I. When two Extremes and the Number ,of Terms are given, to find the Sum of all the Series or Terms. RULE. Multiply the Sum of the two Extremes into the Number of Terms, and divide the... ## Mathematics: Compiled from the Best Authors and Intended to be the ..., Τόμος 1

Samuel Webber - 1801
...sum of all the terms. . , PROBLEM I. , 1'te frit term, the last term, and the number of terms behtg given, to find the sum of all the terms. RULE.* Multiply the sum of the extremes by the number of terms,, and half the product will be the answer. EXAMPLES. * Suppose another... ## The Tutor's Guide: Being a Complete System of Arithmetic; with Various ...

Charles Vyse - 1806 - 320 σελίδες
...Ratio of If. What is the Share of the eldest ? PROPOSITION III. When the first Term, Ratio, and Numbar of Terms, are given, to find the Sum of all the Terms. RULE. Find the last Term as before, from which take the first : divide the Remainder by the Ratio, less one,... ## Adams's New Arithmetic: Arithmetic, in which the Principles of Operating by ...

Daniel Adams - 1810 - 180 σελίδες
...price, 132* cts. \ . X 1UO = 13230 cts. = \$132'30, whole cost. , \$ *"'• Hence, when the extremes and the number of terms are given, to find the sum of all tfta terms, — Multiply one half the sum of the extremes by the number of terms, and the product will... ## A System of Practical Arithmetic: Applicable to the Present State of Trade ...

Jeremiah Joyce - 1812 - 258 σελίδες
...others may be easily found. I. When the first term a, and the last .term z, and th« number of terms n, are given, to find the sum of all the terms, *. RULE. Multiply the sum of the extremes by the number ofte/mi, and divide by 2, the quotient is the ansu-er: or n a. + z X — = s.... ## A System of Arithmetic

Samuel Webber - 1812 - 248 σελίδες
...5. The sum of all the terms. PR0BLEM 1. Tke first term, the last term, and the number of terms being given, to find the sum of all the terms. RULE.* / Multiply the sum of the extremes by the number of terms, ami half the product will be die vinswer. EXAMPLES. 1. The first term... ## Logarithmick Arithmetick: Containing a New and Correct Table of Logarithms ...

1818 - 251 σελίδες
...5. The sum of all the terms. PROBLEM I. The first term, the last term, and the number of terms being given, to find the sum of all the terms. RULE. Multiply the sum of the extremes by the number of terms,," and half the product will be the answer. EXAMPLES. 1. The first... ## A Complete System of Theoretical and Mercantile Arithmetic: Comprehending a ...

George G. Carey - 1818 - 574 σελίδες
...the other two may l»e foiled. st: L THE LEAST TERM, THE GREATEST TERM, AND THE NUMBER OF TERMS BEING GIVEN, TO FIND THE SUM OF ALL THE TERMS. RULE. Multiply the sum *f tbe greatest a*4 least terns by half the number of tersw, or by tbe whole jtumber of terms, anil... ## The Youth's Assistant in Theoretick and Practical Arithmetick ...

Zadock Thompson - 1826 - 164 σελίδες
...difference, and the sum of all the terms. Problem I. The first term, the last term, and the number of terms given, to find the sum of all the terms. RULE.* — Multiply the sum of the extremes by the number of terms, and half the product will be the answer. Examples. 1. The first term... ## Practical and Mental Arithmetic on a New Plan: In which Mental Arithmetic is ...

Roswell Chamberlain Smith - 1827 - 196 σελίδες
...diminishes. PROBLEM I. — The first term, the last term, (ie the two extremes) and the number of terms given to find the sum of all the terms. RULE. — Multiply the sum of the extremes by half the num. Чег of terms, the product will be the answer. EXAMPLES. — How many times...