 | Daniel Adams - Arithmetic - 1840 - 278 pages
...) 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. If the extremes be 5 and 605, and the number of terms 151, what... | |
 | Arithmetic - 1841 - 200 pages
...last term, and the number of terms being given, to find the aggregate, or total sum of all the terms. RULE. — (') Multiply the sum of the extremes by...of terms, and half the product will be the answer. Quertion 1. How do you find the aggregate or total sum of all the terms? EXAMPLES. 1. The first term... | |
 | Benjamin Greenleaf - Arithmetic - 1841 - 334 pages
...PROBLEM IL 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 sum. 5. The extremes of an arithmetical series are 3 and 45, and the number of terms 22. Required the... | |
 | Daniel Adams - Arithmetic - 1848 - 316 pages
...series ; hence, mhen the extremes and the number of terms are given to find the sum of the terms, RU1.E. Multiply the sum of the extremes by the number of terms, and half the product will be the sum of the terms. EXAMPLES FOR PRACTICE. 2. If the extremes be 5 and 605, and the number of terms 151,... | |
 | John M'Nevin - Arithmetic - 1841 - 300 pages
...first term, the sum is the last term. 2. Add the first and last terms together, and multiply the sum by the number of terms, and half the product will be the sum of all the terms. 1. A person sold 40 yards of muslin at 2 cents for the first yard, 4 cents for... | |
 | Daniel Adams - Arithmetic - 1841 - 282 pages
...-Hence, when the extremes and the number of terms are given, lo 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. If the extremes be 5 and 605, and the number of terms 151, what... | |
 | John M'Nevin - Arithmetic - 1841 - 300 pages
...first term, the sum is the last term. 2. Add the first and last terms together, and multiply the sum by the number of terms, and half the product will be the sum of all the terms. 1 . A person sold 40 yards of muslin at 2 cents for the first yard, 4 cents for... | |
 | Osman Call - Arithmetic - 1842 - 210 pages
...TERMS GIVEN, TO FIND THE SUM OF ALL THE TERMS. RULE. — Multiply the sum of the first and last term by the number of terms, and half the product will be the sum of all the terms. Or, which is equally correct, multiply the sum of the Jirst and last term by... | |
 | Nathan Daboll - Arithmetic - 1843 - 254 pages
...miles. CASE III. The first term, last term, and number of terms given, tq find the sum of all the terms. RULE. Multiply the sum of the extremes by the number...half the product will be the answer. EXAMPLES. 1. A man bought 12 yards of cloth in arithmetical progression. For the first yard he gave 6 cents, and... | |
 | Benjamin Greenleaf - Arithmetic - 1843 - 340 pages
...II. 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 sum. 5. The extremes of an arithmetical series are 3 and 45, and the number of terms 22. Required the... | |
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RULE.* — Multiply the sum of the extremes by the number of terms, and half the product will be the answer. 
