293. Oral Exercises. 1. You have a board 10 feet long and saw it into 10 equal pieces; a piece is how many inches in length? 2. Saw a board 12 feet long into 3 equal pieces. How long is 1 piece? 3. You have a sheet of cardboard 2 feet square, and cut it into 4 square pieces. What will each piece measure all around? 4. How many square feet in 2 feet square? If have a board 6 feet long 5. you 2 ft. and 1 foot wide, how many boards measuring 1 square foot can you saw out of it? 6. Make the lid of a box that measures 2 feet one way and 3 feet the other way. How many square feet? 7. Draw nine squares all fitting together into one large square. 295. Written Exercises. Multiply 624 by 25. EXPLANATION. First multiply by the 5 units. Place the first figure of the product in the units' place. Then multiply by the 2 tens; place the first figure of the product under the 2 tens. Add the two 20 × 624=12480 5 × 624 3120 25 × 624=15600 624 25 3120 298. Written Exercises. Divide 484 by 22. EXPLANATION. write the 22 22)484 44 44 44 See how many times 22 is contained in 48. Write 2 as part of the quotient. Multiply 22 by 2, and 44 under the first two figures of the dividend. Bring down the next figure of the dividend, 4. 22 is contained in 44. Write 2 in the quotient. Multiply and subtract as before. Find quotients: See how many times 301. Oral Problems. 1. How much does a man earn in six days, when he earns 3 dollars a day? 2. What is paid for a gallon of milk at 5 cents a pint? When a man is paid $24 for six days' work, how much does he earn a day? 4. What will 24 pounds of butter cost at 30 cents a pound? 5. When a man earns $4 per day, and spends a dollar a day, how much does he save in six days? 6. In how many days will a man earn $6, if he works for $1.50 a day? If 7. you step two feet at a time, how many steps will you make in walking 60 yards? 8. At 40 cents a peck, how much would a bushel and a peck of peaches cost? 9. In an orchard there are 40 pear-trees, 80 peachtrees, and 80 apple-trees. How many trees? 10. A man bought 3 horses at $150 a head and sold them for $500. How much did he gain? II. Ruth paid 50 cents for 5 pencils and a book. The book cost 30 cents; how much apiece did she pay for the pencils? 12. Mary paid $1 for tea, and for sugar at 6 cents a pound. The tea cost 70 cents a pound; how many pounds of sugar did she buy? 302. Written Problems. 1. A farmer's expenses were: for labor, $387; for corn, $126; for implements, $95; for 1 mule, $115; for family and other expenses, $567; find the total. 2. A remainder is 346, and the minuend is 950; what is the subtrahend? 3. A farmer raised 10 bales of cotton, weighing as follows: #1. 568; #2. 496; # 3. 521; #6. 515; #7. 503; # 8. 486; find the weight of the 10 bales. # 4. 490; #5. 492; #9. 476; # 10. 450; 4. At 32 pounds to the bushel, how many bushels of oats will weigh 6 752 pounds? 5. A miller ground 5 412 bushels of corn, averaging 44 bushels a day. How many days? 6. In a cistern there are 6 480 gallons of water. How long will the water last if 45 gallons be used per day? 7. A field of 80 acres produced 32 bushels of corn to the acre. What was the total yield of corn? 8. What is the weight of 2 560 bushels of corn at 56 pounds to the bushel? 9. A farm was sold at 36 dollars an acre, and brought $4 176. Find the number of acres in the farm. 10. Find the difference between 31× 43 and 30× 44. II. Find the difference between 720÷8 and 720÷9. 12. Find the difference between 8×64 and 16×32. |