The First Book of Arithmetic

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H. Cowperthwait & Company, 1860 - Arithmetic - 176 pages
 

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Page 72 - Miscellaneous. 12 things = 1 dozen. 12 dozen = 1 gross. 12 gross = 1 great gross. 20 things = 1 score.
Page 64 - MONEY. 10 mills = 1 cent. 10 cents = 1 dime. 10 dimes = 1 dollar. 10 dollars = 1 eagle.
Page 73 - WEIGHTS. 10 milligrammes = 1 centigramme. 10 centigrammes = 1 decigramme. 10 decigrammes = 1 gramme. 10 grammes = 1 decagramme. 10 decagrammes = 1 hectogramme. 10 hectogrammes = 1 kilogramme. 10 kilogrammes = 1 myriagramme.
Page 69 - Every circumference of a. circle, whether the circle be large or small, is supposed to be divided into 360 equal parts called degrees. Each degree is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds.
Page 72 - MEASURE. 10 millimetres = 1 centimetre. 10 centimetres = 1 decimetre. 10 decimetres = 1 metre. 10 metres = 1 decametre. 10 decametres = 1 hectometre. 10 hectometres = 1 kilometre.
Page 154 - To find a common denominator of two or more fractions. Multiply the terms of each fraction by the denominators of all the other fractions. 2. To find their least common denominator. I. Find the least common multiple of the denominators of the given fractions for their least common denominator. II. Divide this common denominator by each of the given denominators, and multiply each numerator by the corresponding quotient. The products will be the new numerators. Reduce to their least common denominator,...
Page 140 - Dividing both numerator and denominator of a fraction by the same number both divides and multiplies the fraction by that number, and, therefore, does not alter its value.
Page 69 - Circular or Angular Measure. (a.) Circular or Angular Measure is used to measure angles, and the circumferences of circles.
Page 63 - I stands for one ; V for five ; X for ten ; L for fifty ; C for one hundred ; D for five hundred ; M for one thousand.
Page 107 - The GREATEST COMMON DIVISOR OF TWO OR MORE NUMBERS is the largest number which is a divisor of each of them.

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