 | Augustus De Morgan - Functions, Exponential - 1837 - 262 pages
....2.3 .... a, then we have cos 10 = 1 - (2) + (4) - (6) + .... To pass from (ri) to (n + 1) we must multiply by 10 (move the decimal point one place to the right) and divide by n + 1 . To get a sine and cosine from this (at the beginning) very diverging series,... | |
 | David Eugene Smith - Arithmetic - 1904 - 336 pages
...$1.25? 3. What is the short way of multiplying a number expressing United States money by 10? by 100? To multiply by 10, move the decimal point one place to the right ; to multiply by 100, move it two places. Hence to multiply, for example, $325.50 by 600, we may first... | |
 | David Eugene Smith - Arithmetic - 1905 - 344 pages
...12£ % of 50 % of 16 ; of 160 ; of 1600 ; of 4800. ,X tJ9. Summary of short methods of multiplying. 1. To multiply by 10, move the decimal point one place to the right, annexing zero if necessary. 2. To multiply by 100, move the decimal point two places to the right, annexing... | |
 | George Wentworth, David Eugene Smith - Arithmetic - 1911 - 396 pages
...Parts. We may simplify multiplication by 10, 100, and 1000, and by their aliquot parts, as follows : (1) To multiply by 10, move the decimal point one place to the Tight, annexing zero if necessary. Thus 10 x 46.75 = 467.5, and 10 x 75J = 10 x 75.5 = 755. (2) To... | |
 | George Albert Wentworth, David Eugene Smith - Arithmetic - 1912 - 374 pages
...Parts. We may simplify multiplication by 10, 100, and 1000, and by their aliquot parts, as follows : (1) To multiply by 10, move the decimal point one place to the right, annexing zero if necessary. Thus 10 x 46.75 = 467.5 ; 10 x 75 = 750. (2) To multiply ly 100, move the decimal... | |
 | Earle Bertram Norris, Kenneth Gardner Smith, Ralph Thurman Craigo - Arithmetic - 1912 - 210 pages
...decimal point one place to the right has multiplied the original number by 10. Therefore, we see that: To multiply by 10 move the decimal point one place to the right. To multiply by 100 move the decimal point two places to the right. For other similar multipliers move... | |
 | Earle Bertram Norris, Kenneth Gardner Smith, Ralph Thurman Craigo - Arithmetic - 1912 - 210 pages
...decimal point one place to the right has multiplied the original number by 10. Therefore, we see that: To multiply by 10 move the decimal point one place to the right. To multiply by 100 move the decimal point two places to the right. For other similar multipliers move... | |
 | David Eugene Smith - Arithmetic - 1913 - 228 pages
...among the simple methods of multiplying and dividing that may profitably be used from this time on: (1) To multiply by 10, move the decimal point one place to the right, annexing zero if necessary. Thus jo x 46.75 = 467.5, and 10 x 75! = 10 x 75.5 = 755. (2) To multiply by 100,... | |
 | George Albert Wentworth, David Eugene Smith - Arithmetic - 1914 - 396 pages
...multiplication that are particularly valuable, because of certain multipliers which are so often used. To multiply by 10, move the decimal point one place...annexing a zero if necessary. To multiply by 100, move the decimal point two places to the right, annexing zeros if necessary. To multiply by 5, multiply... | |
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To multiply by 10, move the decimal point one place to the right, annexing a zero if necessary. 
