22. At 25¢ per pound, how many pounds of cheese can 33. At 25 cents apiece, how many hats can be bought for $6? 34. At 25 cents a pound, how many pounds of cheese can be bought for $5? (How many pounds for $1?) 35. At 16 cents a dozen, how many dozen eggs can be bought for $4? Written What is the cost of: 1. 166 pounds of pork at 12 cents a pound? 6. 748 pounds of tea at 50 cents a pound? 7. What is the value of 728 sacks of potatoes at 87¢ a sack? (87¢ is what part of a dollar?) 8. What must the school board pay for 960 gross of pens at 621 per gross? 9. What did Mr. Stone, the druggist, pay for 584 boxes of candy at an average price of 371⁄2¢ per box? 10. At 25¢ per box, how many boxes of candy could be bought for $89? (How many boxes for $1?) 11. Fred saves 75¢ a week. In how many weeks will he save $37? REVIEW AND PRACTICE Oral (For class exercise, not for assignment.) 1. $8 will buy how many pounds of butter at 25¢ a pound? 2. At 33¢ a bushel, $3 will pay for how many bushels of turnips? 3. $1 is the cost of how much cheesecloth at 61¢ a yard? 4. Find the cost of 24 yd. of ribbon at 8¢ a yard. 5. When $4 will buy 24 lb. of beefsteak, how many pounds will $1 buy? ($1 is what part of $4?) 6. When $9 will pay for 72 cans of peas, what is the price per can? (How many cans for a dollar?) 7. Frank began at Chapter XVII in his book this morning and has read 12 chapters to-day. Express in Roman numerals the number of the last chapter which he read. 8. Find the cost of 300 yd. of flannel at 33¢ a yard. 9. Give the products: X2; 3; 2×11; ×3; 1 × 1; 1 × 29 × × 10. 2 qt. of beans at 7¢ and 3 lb. of maple sugar at 8¢ cost how much? 11. How many one-ounce samples can be made from 21 lb. of cereal? 12. How many yards are there in 4 rd.? 13. What is the area of a floor 12 ft. by 6 ft.? 14. Express 22 in simplest form. 15.of of a gallon is how many gills? 16. When 3 cents will buy lb. of maple sugar, what is the cost of 2 lb.? 17. of 75 ft. are how many yards? 18.of of a yard is how many inches? 19. Margaret's mother buys lb. of sliced bacon twice a week at 30¢ per pound. a. How much does she pay each time? b. How much does she pay for bacon in six weeks? c. How much would a 6-pound piece of bacon cost at 20¢ a pound? d. How much would Margaret's mother save by buying such a piece at that price? 20. Name three sums of money that may be used conveniently in computation as fractions of $1. Written 1. Express in figures eight hundred million eighty thousand eight. 2. Divide the product of 36, 45, 20, and 14 by the product of 80, 27, 35, and 72. (Use cancellation.) 3. Find the quotient of 27 × 28 × 30 divided by 18 X 35 X 36. (Use cancellation.) 4. Change 786 to simplest form. 5. How many ninths are there in 18? 6. Change 21 to 33ds. 9. The sum of two fractions is 14. One of them is3 What is the other? 10. The product of two fractions is. One of them is 1. What is the other? 11. Find the cost, at $.621 a bushel, of the seed oats for a field of 7 acres, if the farmer sows 2 bu. on an acre. 12. Draw a plan of a rectangular lawn 4 rd. by 2 rd., using of an inch for a foot. That is, draw it to the scale of" to 1'. 13. Find the cost of 325 bu. of wheat at $1.66% per bushel. (Express $.663 as a fraction of a dollar.) 14. How long will it take a motor car to travel 87 mi., if it travels at the rate of 123 mi. in half an hour? 15. Make a problem about 7 tons of coal, $43.75, and 28 tons of coal. Find the answer. 16. In a Vermont sugar orchard there were 368 trees. The average "run" of sap for one week was 24 qt. per tree. (a) How many gallons of sap were there to be gathered that week? (b) It yielded one pound of sugar to three gallons of sap. How many pounds of sugar did it make? (c) The cask in which the sap was drawn to the boiling camp holds two barrels of sap. How many times was it filled, allowing 12-qt. waste? 17. One year is 365 days. How many days are there in 29 years? 18. A dairyman sent 237 quarts of milk to the creamery. If the milk weighed 2 pounds per quart, what was the total weight? EXERCISES FOR CLASS DRILL (Not for assignment.) Practice until you can get all sums correct in four For rapidity and accuracy, add digits from left to right as directed on page 6. Divide class into teams of 4, and try for a record. Find the factor not given; in some of these exercises it will be a mixed number. Test by multiplication. 42,898 52,767 30,622 27,323 62,839 35,511 27,412 138,014 184,041 193,428 136,422 523,429 33,288 79,435 191,844 39,517 813,604 44,600 168,007 23,871 159,954 59,132 318,641 231,428 104,624 560,700 7,137,800 801,000 890,000 596,300 |