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An acre contains 43,560 square feet. A rood (R.) is 40

square rods.

ORAL EXERCISES.

15. How many square inches in sq. ft.? In sq. ft.? sq. ft.? In 1 sq. ft.?

In 0.5

16. How many square feet in 3 sq. yd.? In 5 sq. yd.? In 200 sq. in. ? In 7 sq. yd. 8 sq. ft.?

17. In 47 surface feet how many surface yards? In 80 sq. ft.? In 100 sq. ft.?

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18. How many square rods in A.? In 7 A.? In 0.75 A.? 19. What part of an acre is 120 sq. rd.? 50 sq. rd.?

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TABLE.

1728 cubic inches (cu. in.) are 1 cubic foot, cu. ft.

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20. In 3 cu. yd. how many cubic feet? In 103 cu. yd.? In

81 cu. ft. how many cubic yards? In 108 cu. ft.? 21. In 4 cd. how many cord feet? In 5 cd.?

22. In 64 cu. ft. how many cord feet?

23. How many cord feet equal a cubic yard?

CAPACITY MEASURES.

172. Liquid Measures are used in measuring liquids.

173. Dry Measures are used in measuring grain, roots, fruit, etc.

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The gallon contains 231 cubic inches; 4 quarts dry measure, 268 cubic inches; and the bushel, 2150.42 cubic inches.

A hogshead as a measure is 63 gallons; and a barrel, 31 gallons.

ORAL EXERCISES.

24. How many gills in 5 pt.? In 94 pt. ?. In 2 qt.? In 1 gal.? In qt.?

25. How many quarts in 7 gal.? In 8 gal.? In 48 pt.? In 100 gi.? In 3 gal. 3 qt.?

26. How many gallons in 41 qt.? In 53 qt.? In 60 pt.? In 120 gi.? In 89 qt.?

27. How many pecks in 48 quarts? How many bushels ? 28. Change to larger measures, 100 pt. of milk; 64 qt. of nuts; 84 gi. of oil.

29. What is a six-gallon can of milk worth at 5 cents a quart?

30. I take a pint of milk at night and a quart in the morning. What is my weekly milk-bill at 7 cents a quart?

31. What cost 62 bu. of potatoes at $4 a bushel?

32. I burn a pint of kerosene every night. What will a 2 weeks' supply cost me at 20 cents a gallon?

33. Bought nuts for $2 a bushel, and sold them for 10 cents a quart. How much did I gain on 5 bushels?

WEIGHTS.

174. Troy Weights are used in weighing gold, silver, and jewels.

175. Avoirdupois Weights are used in weighing all common articles.

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1. The long ton of 2240 avoirdupois pounds is used at customhouses, and in weighing coal at the mines.

2. A pound avoirdupois is equal to 7000 grains, so that 192 ounces avoirdupois are equal to 170 ounces troy, and 144 pounds avoirdupois are equal to 175 pounds troy. A hundred-weight (cwt.) is the same as the cental.

ORAL EXERCISES.

34. In avoirdupois weight, 3 lb. are how many ounces? 5 lb.? 24 lb.? 3 lb. 7 oz.? 2 lb. 9 oz.? 3 lb. ? .75 lb.?

35. In avoirdupois weight, 56 oz. are how many pounds? 65 oz.? 27 oz. ? 2500 lb. are how many tons? 4000 lb. ? 7000 lb. ?

36. Change to the next larger troy weight, 35 oz.; 75 oz.; 60 pwt.; 84 pwt.; 48 100 oz. 30 gr.; gr.; 37. Change to the next smaller troy weight, 3 lb.; 2 lb.; 4 lb. 7 oz.; 6 oz.; 5 oz.; 2 pwt.; 21 pwt.; lb.; pwt.; 0.6 lb.; 0.8 oz.

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38. What cost 2 lb. 4 oz. of butter at 32 cents a pound? 39. What can I get for 7 pwt. of old silver at $1.10 an oz.?

40. How much hay at $25 a ton can be bought for $ 55? 41. If 200 lb. can be packed in a barrel, how many barrels will be needed to pack 2 T. 8 ctl.?

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1. The Civil Day begins and ends at 12 o'clock, midnight.

are 1 week, wk.

" 1 year, y.

"1 century.

2. The Calendar Months, and the number of days in each, are,

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3. The Solar Year is 365 d. 5 h. 48 min. 49.7 sec., or very nearly 365 days. The fraction in 4 years amounts to nearly a day. Hence, When the number of any year is divisible by 4 and not by 100, and when it is divisible by 400, the month of February has 29 days, and the year is called a leap year.

ORAL EXERCISES.

42. How many minutes in 2 h.? In 3 h.? In h.? In 3 h. 20 min. ?

43. How many hours in 210 min.? In 3 d.? In wk.? 44. How many days in 96 h. ? In 60 h. ?

45. How many minutes from 10.25 A. M. to 11.45 A. M.? From 11.50 A. м to 1.35 P. M.?

46. What part of a minute is 42 sec.? What part of an hour is 48 min. ?

47. How many days from Mar. 31 to May 31? From June 7 to July 15? From Oct. 19 to Nov. 12?

48. How old is a child on July 4, 1883, who was born May 31, 1880 ?

49. If a three weeks' vacation begins June 21, when does it end? If it ends Oct. 9, when does it begin?

50. What day was 25 days before Mar. 4, 1880? Sixty days after?

51. How long from Thursday noon to 4.30 P. M. of Friday? 52. How long is the night when the sun sets at 7.35 and rises at 4.30?

53. Name the next six leap years.

54. What century is this? In what century did 1620 come?

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