# A Secondary Arithmetic

• Paperback
By (author)

List price: US\$21.21

Currently unavailable

AbeBooks may have this title (opens in new window).

## Description

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1908 edition. Excerpt: ..." to the column whose sum is desired. If great care is used in expressing the right hand figure of each partial product, but one more place than the number wanted in the complete product is needed. Example 2. Find the quotient of 26.843 divided by 3.1416, to the second decimal place. Abridged Work. Complete Work. 8.54 8.54 3.14,10)26.843 3.1416)26.8430 25.13 25.1328 1 71 1 71020 1 57 1 57080 '14 139400 13 125664 13736 Explanation. Multiplying a dividend by a number has the same effect upon the quotient as dividing the divisor by that number. Also, to "bring down" a figure is equivalent to multiplying the remainder by 10 and adding that number, and to "cut off" a figure from the divisor is equivalent to subtracting that number and dividing by 10. Then, evidently one may " cut off" a figure from the divisor instead of "bringing down" one from the dividend, without having much effect upon the quotient. (What is the difference?) In the work above, 16 was cut off before beginning the division, for it was at once evident that only three figures were required in the answer. The 4 of the divisor was cut off before the second division, then the 1 to its left before the third division. EXERCISES. Find the products, approximated to tenths, in the following: 1. 34.6X38.42. 6. 26.83x3.1410." 2. 9.362x84.52. 7. 879.6x1-732. 3. 62.96X3.141. 8. 89.07x1-414. 4. 8.695x6.843. 9. 32.61x4.208. 5. 36.81X49.62. 10. 396.2x16-84. Find the quotients, approximated to tenths, in the following: CHAPTER II. POWERS AND ROOTS. 116. Powers. The numbers whose product is a given number are its factors. Thus, the factors of 42 are 2, 3, and 7, since 2x3x7 =42. What are the factors of 20? If all of the factors of a number are...