ORAL EXERCISE 47. Rapid oral work. In adding 26 and 45 begin with the tens, saying: 26, 66, 71. In subtracting follow the first plan on page 10, or in the case of 75-48 think: 75 - 40 835-8= 27. In multiplying by a two-figure multiplier it is better to begin with the tens, as in 12 times 24, where we should think: 240+ 48 = 288. ORAL EXERCISE Find the cost in each example: 1. Tea @ 98%, and coffee @ 49%. 2. 4 yd. silk @ $1.20 a yard. 3. Flour @39, and cheese @ 289. 4. Biscuits @ 24, and cake @ 379. 5. A book @ 659, and a hat @ $1.75. Find the price per pound, ounce, or piece, in Exs. 6-11: 6. 6 lb. of figs cost $1.08. 7. 9 cans of soup cost $1.17. 8. 20 oz. of olive oil cost 64¢. 9. 60 cakes of soap cost $2.70. 10. 50 lb. of dried apples cost $5.25. 11. 8 lb. of English walnuts cost $1.28. WRITTEN EXERCISE 1. 273 +421 + 68 + 9026 + 34,379 + 75 + 286. 2. 3972 +8298 +4000+ 17,625 +31 +9+407. OUR COUNTRY'S FOOD SUPPLY 48. Wheat. This great food product brings to our farmers three or four hundred million dollars a year. WRITTEN EXERCISE 1. If 43,525,000 acres of wheat in this country produce on an average 13 bu. to the acre, what is the total yield? 2. If Kansas produces 82,368,000 bu. a year, which is 12,000 times as much as Connecticut, how much does Connecticut produce? 3. If the wheat crop of the world is 2,586,000,000 bu. a year, and if the United States produces of it, how many bushels does it produce? 4. If the United States produces 547,303,000 bu. of wheat in one year, worth 70% a bushel, what is the total value of the crop? 5. If the value of the Minnesota yield of wheat averages $32,560,000 a year, and this is 4400 times that of New 49. Corn. Another of the great food products of the country is corn. The greatest corn-producing states are Iowa, Illinois, Nebraska, Missouri, Kansas, and Indiana. 1. When this country produced 2,105,102,400 bu. of corn a year, averaging 25 bu. to the acre, how many acres had we in corn? 2. If 3 bu. of corn could then be bought for $1, what was the total value of this yield of 2,105,102,400 bu.? 3. When Iowa's annual product amounted to 305,800,000 bu., this was how many times the 440,000 bu. produced by Maine? 4. To transport 1000 lb. of corn from St. Louis to New Orleans by river costs $1. How much will it cost to transport 1750 tons? 5. If the average value of corn for each of the 46,610 acres given to it in Connecticut in a certain year was $21, and for each of the 4,031,600 acres in Indiana $13, what was the entire value of the corn crop of each state? 6. If the average annual corn crop per acre is 40 bu. in Wisconsin, 36 bu. in Maine, 37 bu. in New Hampshire, 38 bu. in Massachusetts, 38 bu. in Indiana, and 38 bu. in 50. Cattle. The greatest beef-producing states are Texas, Iowa, and Kansas. The greatest stock yards and packing houses in the world are in Chicago. 1. If Texas has 4,533,897 head of cattle, valued at $17 a head, how much are they all worth? 2. If Kansas has 2,076,489 head of cattle, valued at $27 a head, how much are they all worth? 3. If Iowa has 2,163,584 head of cattle, valued at $31 a head, how much are they all worth? 4. If this country sold 55,553,750 lb. of canned beef in a certain year, at 9 ct. a pound, what was the total value? 5. In a year when the census showed 69,335,832 cattle in this country, their value was estimated at $1,525,388,304. What was the average value per head? 6. In a year when the census showed 18,108,666 cows kept for milk, their value was estimated at $543,259,980. What was the average value per head? 7. The number of cattle being raised for food in the United States in 1880 was 21,231,000, and our population was 50,155,783. In 1900 the number of cattle was 27,610,054, and our population was 76,303,387. What was |