# The Juvenile Mental Arithmetic: Designed for the Use of Primary and Common Schools. Being Also an Introduction to the "American Intellectual Arithmetic ..."

Sheldon, Blakeman & Company, 1857 - Arithmetic - 71 pages
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Page 58 - Thirty days hath September, April, June, and November ; All the rest have thirty-one, Except the second month alone, Which has but twenty-eight, in fine, Till leap year gives it twenty-nine.
Page 55 - A pile of wood 8 feet long, 4 feet wide, and 4 feet high, contains 1 cord; and a cord foot is 1 foot in length of such a pile.
Page 52 - AVOIRDUPOIS WEIGHT. 16 drams (dr.) make 1 ounce, marked oz. 16 ounces 1 pound Ib. 28 pounds 1 quarter qr. 4 quarters 1 hundred weight cwt. 20 hundred weight 1 ton T.
Page 25 - LESSON IV. 1. Edward had 9 oranges, and gave 5 of them to his sister ; how many had he left ? 2. A boy had 11 rabbits, 3 of which were killed by a dog ; how many had he left ? 3. A farmer, having 8 bushels of apples, sold 5 bushels of them ; how many were left ? 4. A boy had 9 birds and 4 squirrels; how many more birds had he than squirrels ; 5. There were 15 questions asked during a recitation, 5 of which were answered incorrectly ; how many were correctly answered...
Page 52 - APOTHECARIES' WEIGHT. 20 grains (gr.) = 1 scruple (3). 3 scruples = 1 dram (3). 8 drams = 1 ounce (§). 12 ounces = 1 pound (ft).
Page 59 - make 1 minute, marked '. 60 minutes 1 degree, - - °. 30 degrees - - 1 sign, - - s. 12 signs or 360° 1 circle, - - c. cs o 1 = 12 = 360 = 21600 = 1296000 1= 30= 1800= 108000 1= 60= 3600 1= 60 EXAMPLES. 1. Reduce 5s. 29° 25
Page 26 - ... he gave 3 hhds. of brandy, at 2 dollars a gallon ; 473 cwt. of sugar, at 8 dollars per cwt. How much did he then owe ? 27. A man bought 7 Ib. of sugar, at \$0.125 per Ib. ; 4 gals. of molasses, at 0.375 per gall. ; 5 Ib. of raisins, at 80.14 per Ib.
Page 9 - ... is done. All illustrations should be given by practical examples, having reference to sensible objects. Most people use the reverse of this principle and think to simplify practical examples by means of abstract ones. For instance, if you propose to a child this simple question: George had 5 cents, and his father gave him 3 more, how many had he then? I have found that most persons think to simplify such practical examples by putting them into an abstract form and saying, How many are 5 and 3....
Page 23 - If you should pay 9 cents for a book, and 4 cents for a pencil, how much would you pay for both ? 4.
Page 53 - Cloth Measure is used in measuring cloth, ribbons, lace, and other articles sold by the yard or ell.