$0.96 $0.18 $0.35 $0.27 $0.87 $0.07 94 137 208 118 267 654 905 5. $82.94 $56.78 $90.72 $34.56 $78.90 $76.08 $39.75 408 549 675 246 468 795 658 3x4x5=? 4x5x3=? 5x3x4=? 5x4 x 3 = ? Does it make any difference in what order numbers are multiplied together? Find the product, selecting multipliers to make your work as easy as possible: 21. Find the product of 758 and 65,942. 22. Multiply 78,659 by 4037. 23. Make a table of the results and memorize : NOTE. Drill should be given on exercises 23, 24, 25, and 26, until pupils can give results instantly. 1. How much will 48 tons of hay cost at $23 a ton? 2. How many gallons of oil in 48 barrels of 42 gallons each? 3. How many yards of cloth in 35 cases if each case contains 72 pieces of 28 yards each? 4. How much must be paid for 68 sheep at $5 each, and 2 cows at $65 each? 5. Mr. Chase leases a house for 4 years at $45 a month. What is the rent for the entire time? 6. It took 27 days for 14 men, working 8 hours a day, to lay a water pipe. This was how many hours' labor? 7. In gathering his crops, Mr. Fitch hires 4 men at $1.85 a day and 2 boys at $0.75 a day. How much does he pay for labor in 4 weeks? 8. An acre of land contains 43,560 square feet. How much is it worth at 7 cents a square foot? 9. Rocky Ford melons are shipped from crates of 45 melons each, 300 crates to a car. melons in 8 carloads? Colorado in How many CASH ACCOUNTS Alfred kept a cash account; that is, an account of money received and paid out. At the top of the lefthand page of his cash book he wrote Receipts. On this page he put down how much he had on hand and how much he received. At the top of the right-hand page he wrote Expenses. On this page he put down how much he paid out. This was his account for one week: 1. How much money had he during the week? 2. How much did he spend? 3. What was the difference between his receipts and his expenses? 4. Write his account for the next week, in which he cut two lawns, one for 50 cents, the other for 60 cents; sold his rabbit for 40 cents; received 20 cents for running errands, and his allowance of 25 cents; spent 50 cents at the circus, 15 cents for peanuts, 75 cents for a trapeze, and 67 cents for a dog collar. Use any dates between June 8 and 14 that you wish. down first on the left-hand page? What item must be put 5. Another boy had 43 cents on hand at the beginning of a week. He earned $1.85 selling papers, 40 cents running errands for the grocer, and 75 cents taking care of a furnace. He spent 65 cents for an arithmetic, 5 cents for paper, 3 cents for a pencil, and 25 cents for a cap. his cash account. Write 6. Keep your cash account for one week and show it to your parents. NOTE. Imaginary cash accounts should be made from data furnished by pupils. 1. What part of 100 is 50? 5? 25? 75? 20? 40? 60? 80? 10? 30? 70? 90? 80¢? 758? 70? 66? 621? 60¢? 50? 40? 371? 33? 30? 25? 121? 10? 5? 2? 1? SHORT METHODS IN MULTIPLICATION Oral 1. What is the cost of 8 neckties at 50 each? SOLUTION. At $1 each, they would cost $8. At 50 each, they will cost of $8, or $4. Find the cost of : 2. 12 caps @ 25¢ 4. 40 plates @ 371⁄2¢ 6. 36 brushes @ 331 8. 32 books @ 621 ¢ 10. 30 pans @ 163 3. 28 yards of cloth @ 75% 5. 72 bushels of grain @ 871 7. 48 pairs of slippers @ 621 9. 18 bushels of apples @ 663 11. 17 pairs of gloves @ 50% 12. At 75 cents a bag, what will 16 bags of flour cost? 13. Mrs. Dodge bought 16 yards of dress goods at 621 a yard. How much did she pay? 14. How much must be paid for 100 skeins of yarn at 121each? 15. At 871 each, how much will 2 dozen pieces of sheet music cost? Make and solve problems based on the following: 100 times 36 = 3600. 50 is of 100. Then 50 times 36 isof 100 times 36, or 1800. Multiply by 50; 25: Think 36, 3600, 1800. 60 28 72 84 31. 48 32 64 52 40 80 |