12. A man built a piece of wall in 36 days. If he worked 6 days a week, how many weeks was he building the wall?

13. A class of 12 scholars need new writing-books. What will it cost to supply the class at 11 cents a book? at 7 cents? at 10 cents? at 8 cents? at 9 cents? at 6 cents?

14. Fred sold 13 papers on Thursday, 11 on Friday, and 15 on Saturday. How many papers did he sell on the three days?

15. A lady paid 48 cents for 12 pencils. How much did she pay apiece?

16. How much are 5 cords of wood worth at $8 a cord? at $5 a cord? at $7 a cord? at $4 a cord? at $6 a cord? at $9 a cord?

17. Mr. Snow paid $48 for 8 tons of coal. How much did he pay a ton?

18. A boy paid 12 cents for a slate, 4 cents for a pencil, and 14 cents for a writing-book. How much did he pay for all?

19. When chestnuts are worth 11 cents a quart, what are 9 quarts worth? 7 quarts? 8 quarts? 5 quarts?

20. In a farm containing 37 acres only 25 acres are cleared land. How many acres are not cleared?

21. When raisins are 10 cents a pound, how many pounds can I buy for 90 cents? for 110 cents? for 80 cents? for 120 cents? for 70 cents? for 60 cents? for 50 cents?

22. A farmer sold 9 barrels of apples at $3 a barrel. How much should he receive for them?

23. A clerk sold from a piece of broadcloth containing 27 yards, 4 yards to one customer, 3 yards to another, 7 yards to another, and 9 yards to another. How many yards remained in the piece?

64. WRITTEN EXERCISES.

24. Add $56.24, $ 27.45, $99.84, $12.13.

Of

25. By the U. S. census of 1880, the product of all the boot and shoe factories was valued at $166 050 354. That of Massachusetts alone was $95 900 510. how much greater value were these manufactures in Massachusetts than in all the other States combined?

26. A gentleman paid $14 for the cloth for a suit of clothes, $1.95 for trimmings, $3 for cutting, and $9 for making. What did his suit cost him?

27. What will 125 arithmetics cost at 40 cents each?

28. A drover having 128 sheep sold 35 to one man, and 32 to another. How many sheep did he have left?

29. In five days Mr. Brown sold 14 cans, 19 cans, 13 cans, 12 cans, and 15 cans of milk. How many cans did he sell in the five days? How much was the milk worth at 32 cents a can?

30. What will it cost to supply 50 scholars with dictionaries at 50 cents a copy?

31. If it costs Mr. Clark 60 cents a day for carfare, and last month it cost him $15.60, how many days did he ride?

32. A man paid in two years $512 for freight; the last year he paid $312.50. How much did he pay the first year?

33. What will 25 yards of carpeting cost at $1.50 a yard?

34. If my income is $1250, and I pay $250 for rent and $850 for other expenses, how much of my income have I left at the end of the year?

35. A milkman bought 210 cans of milk in 14 days. How many cans did he buy a day on the average?

36. What will 25 yards of silk cost at $2.50 a yard? 37. A grocer bought 28 barrels, 35 barrels, 42 barrels, and 71 barrels of flour. How many barrels in all did he buy?

38. How many bushels are there in 5 bins of corn containing 55 bushels each ?

39. James attended school 196 days one year, and 134 days the next. How many more days did he attend school one year than the other?

40. A bookseller paid $300 for arithmetics at 75 cents a copy. How many copies did he buy?

41. What will 8 barrels of flour cost at $6.50 a barrel? at $7.25? at $8.75?

42. A fruit-dealer having 1000 oranges sold 785. How many had he left?

43. William Stone bought 6 collars at 15 cents each, a pair of cuff-buttons for 85 cents, and a pair of cuffs for 20 cents. How much did he pay for all?

44. A farmer paid $15.72 for grain in January, $19.83 in February, $13.85 in March, and $29.05 in April. How much did he pay for grain in the four months?

45. A grocer paid $32.76 for coffee at 28 cents a pound, and sold it at 35 cents a pound. How much did he make?

46. If a bushel of apples weighs 50 pounds, what is the weight of 75 bushels of apples? 85 bushels ? 95 bushels?

47. A teacher bought for his class 38 arithmetics at 75 cents each, 25 grammars at 38 cents each, 36 writing-books at 12 cents each. How much did he pay for all?

48. Mrs. Smith took the first week in January 10 quarts of milk, the second week 16 quarts, the third week 11 quarts, and the fourth week 15 quarts, at 7 cents a quart. She paid for the milk with eggs at 24 cents a dozen. How many dozen did it take?

49. Ellen Alden's mother bought for her birthday party 3 pounds of candy at 25 cents a pound, 6 pounds of mixed nuts at 15 cents a pound, 3 dozen oranges at 35 cents a dozen, 2 pounds of raisins at 12 cents a pound, 8 quarts of ice cream at 40 cents a quart. How much did these things cost?

50. A strawberry-bed yielded on the first picking 122 quarts, on the second 137 quarts, on the third 150 quarts, and on the fourth 177 quarts. The berries were sold at 16 cents a quart. For how much were they sold? Since there are 32 quarts in a bushel, how many bushels were picked?

51. How long will it take a man who speaks 125 words a minute to deliver an address covering 25 pages, each page containing 30 lines and each line 9 words?

52. How long will it take to go by car from Philadelphia to San Francisco if the average rate is 35 miles an hour and the distance 3220 miles?

53. The President's salary is $ 50 000 a year. How much of this can he spend each year, and yet save $45358 in 4 years, his term of office?

54. A field of 11 acres yielded 17.5 bushels of wheat an acre. If the labor and seed cost $175.50, and the wheat brought $1.05 a bushel, how much profit was made from the field?

55. How many pounds of butter at 37 cents a pound must be given for 32 pounds of sugar at 6 cents a pound, 8 pounds of coffee at 32 cents a pound, and a barrel of flour at $6.25?

65. If anything, as an orange, is divided into two equal parts, each of these equal parts is called one half, and is written.

If the orange is divided into three equal parts, each of these parts is called one third, written ; two of these parts are called two thirds, written .

If the unit is divided into four equal parts, each of these parts is called one fourth, written ; two of these parts are called two fourths, written; three, three fourths, ; and so on. These expressions,,, ,, etc., are called fractions.