LESSON XIII. 1. Ir two men can cut a certain field of wheat in four days, how many days will it take one man to cut it? 2. If three men can do a piece of work in five days, in how many days could one man do the same? 3. If a quantity of provisions will serve five men six days, how many days would the same provisions serve one man? 4. If a quantity of provisions will serve four men five days, how many men would the same provisions serve one day? 5. Six men built a piece of fence in seven days, but, the fence being destroyed, it is necessary to rebuild it in one day; how many men must be employed to do the work? 6. Paid twenty dollars for five yards of cloth; what was the price of one yard? 7. If a horse can travel 6 miles in one hour, in how many hours can he travel 18 miles ? 8. A butcher bought sheep at 7 dollars a head; how many did he buy for 28 dollars? For 42 dollars? 9. At 8 dollars a barrel, how many barrels of flour can I buy for 24 dollars? For 40 dollars? 10. At 7 dollars a barrel, flour worth? what are 5 barrels of 11. A laborer worked 5 months for 60 dollars; what did he receive for 1 month? For 3 months? 12. If the interest of 1 dollar is 6 cents for a year, what is the interest of 7 dollars for the same time? 13. If the interest of 1 dollar is 6 cents for 1 year, what is the interest of the same sum for 9 years? For 12 years? 14. If a man can earn six shillings in a day, how many shillings can he earn in 5 days? In 8 days ? 15. At $5 a week, what will 8 weeks' board cost? 16. A man can earn 10 dollars in a month; how much can he earn in 7 months? In 9 months? 17. A man worked for 11 dollars a month, and earned 77 dollars; how long did he work? 18. If 72 peaches are divided equally between 8 boys, how many does each receive? 19. How many acres of land, at 12 dollars an acre, may be bought for 36 dollars? For 60 dollars? 20. Seven days make a week; how many days in 9 weeks? In 12 weeks? 21. A man can perform a journey in 63 hours; in how many days, of 9 hours each, can he perform it? LESSON XIV. 1. EIGHT are how many times 2? 4? 2. Ten are how many times 5? 2? 10? 1? 3. Twelve are how many times 2? 3? 6? 4? 4. Fourteen are how many times 2? 7? 14? 5. Fifteen are how many times 3? 5? 1? 6. Sixteen are how many times 2? 4? 8? 7. Eighteen are how many times 6? 9? 2? 3? 8. Twenty are how many times 4? 10? 2? 5? 9. Twenty-one are how many times 3? 7? 10. Twenty-four are how many times 3? 6? 8 ? 2 ? 11. Twenty-eight are how many times 4? 2? 7? 14? 12. Thirty are how many times 5? 10? 6? 3? 2? 13. Thirty-two are how many times 8? 4? 2? 16? 14. Forty are how many times 8? 4? 5? 10? 15. Forty-two are how many times 6? 7? 3? 21? 16. Forty-five are how many times 3? 9? 5? 15? 17. Forty-eight are how many times 4? 8? 12? 6? 18. Fifty are how many times 5? 25? 10? 2? 19. Fifty-four are how many times 6? 3? 9? 2? 20. Sixty-four are how many times 8? 4? 16? 21. Seventy-two are how many times 8? 6? 9? 22. If 4 horses eat 8 tons of hay in 6 months, how many horses will eat 8 tons in 12 months? 23. If 5 horses eat 10 tons of hay in 6 months, how many tons will 7 horses eat in the same time? 24. Bought 6 tons of coal at 8 dollars a ton, and paid for it with cloth at 4 dollars a yard; how many yards did it take? 25. If 6 men can do a piece of work in 10 days, how many men can do the same in 15 days? In 5 days? 26. If 6 men can do a piece of work in 15 days, in how many days can 10 men do the same? 30 men? 27. How many barrels of pork, at 12 dollars a barrel, will pay for 10 barrels of flour, at 6 dollars a barrel ? In 48? In 72? 28. How many 8's in 16? LESSON XV. READ across the page thus: 5 and 1 are 6; 5 from 6 leaves 1; 5 times 1 are 5; 5 in 5, once; etc. SECTION THIRD. LESSON I. REMARK. When any thing is divided into two equal parts, one of the parts is called one half of the thing; so when any number is divided into two equal parts, one of these parts is called one half of the number. 1. If an apple is worth two cents, what is one half of it worth? Ans. It is worth one half of two cents. 2. What is one half of two cents? Ans. One half of two cents is one cent. 3. Why? Ans. Because, if we divide two cents into two equal parts, one of the parts is one cent. 4. How many halves of an apple make a whole apple? 5. How many halves of a pear make a whole pear? 6. Are two halves of a dollar equal to a whole dollar? Ans. Yes. Two halves of any thing make the whole of that thing. 7. If you can buy a pear for two cents, what part of it can you buy for one cent? 8. One is what part of two? Ans. One is one half of two. 9. If you can buy one pear for two cents, how many pears can you buy for three cents? 10. Three are how many times two? Ans. Once two and one half of two. 11. If you can buy one yard of cloth for two dollars, how many yards can you buy for four dollars? 12. Four are how many times two? 13. Two is what part of four ? 14. Six are how many times two? 15. Five are how many times two? Ans. Two times two and one half of two. |