REVIEW WORK. Oral Exercises. 296. 1. If 6 oranges cost 30 cents, what will 3 oranges cost? If 6 oranges cost 30 ct., 1 orange will cost of 30 ct., or 5 ct.; and 3 oranges will cost 3 X 5 ct., or 15 ct. 2. If 9 cords of wood cost $36, what will 1 cord cost? What will 12 cords cost? 3. If 4 knives cost 96 cents, what will 9 knives cost? 4. If of a pound of candy costs 10 cents, how much must I pay for 2 pounds? 5. If of a pound of cheese costs 5 cents, how much will 2 pounds cost? 6. If 4 men can do a piece of work in 6 days, how many days will it take 3 men to do it? If it takes 4 men 6 days to do the work, it will take 1 man 4 × 6 days, or 24 days; if it takes 1 man 24 days, it will take 3 men of 24 days, or 8 days. 7. If 8 men can mow a field in 9 days, how many days will it take 6 men to mow the field? 8. If 4 men can dig a ditch in 5 days, how many men will be required to dig it in 4 days? 9. 7 is of what number? 10. 11. At 10 cents a dozen, what will 60 apples cost? How many oranges at the rate of 2 for 5 cents can I buy for 20 cents? 12. How many coats can be cut from 21 yards of cloth, if 3 coats can be cut from 9 yards? 13. How many pounds of sugar at 6 cents a pound must be given for 2 pounds of coffee at 15 cents a pound? 14. If you divide 36 marbles among 6 boys, how many marbles will 2 boys have? 15. If a railroad car has 8 wheels, how many cars will 40 wheels supply? 16. A boy bought 6 lead pencils at 4¢ each and exchanged them for erasers at 3¢ each. How many erasers did he get? 17. If 7 men can do a piece of work in 9 days, how many men will it take to do the same work in 1 day? 18. If you buy 3 dozen pencils at 20¢ a dozen, and sell them at 3¢ each, how much do you gain? 19. John is 9 years old, and his father is 3 times as old and 9 years more. How old is his father? 20. If a man pays $30 for 6 sheep, how much at the same rate does he pay for 5 sheep? 21. How many square yards in the floor of a room 15 yards long and 9 yards wide? 22. Alice's father gave her $2 every 2 months. How many dollars did he give her in a year? 23. If a cow gives 6 qt. of milk a day, how many gallons does she give in six days? 24. $28 is $7 more than the cost of 3 tons of coal. What does 1 ton cost? 25. A man pays $3 a month for his room rent and $9 a month for his office rent. How much rent does he pay a year? 26. If 2 oranges are worth 4 apples, how many oranges are worth 12 apples? Written Exercises. 297. 1. A man gave $35 for a wagon, and paid $4 for repairing it. For how much must he sell it to gain $11? 2. There are CL Psalms. When you have read XC, how many more have you to read? 3. The earth moves in its orbit 19 miles a second. How many miles does it move a minute? 4. B and C start from the same place and travel in opposite directions. B travels 5 miles an hour, and C 4 miles an hour. How far apart are they in 15 hours? 5. A clock strikes 156 times a day. How often will it strike in a year of 365 days? 6. A barrel of flour weighs 196 pounds. What is the weight of a barrel? 7. Sound travels 1120 feet a second. How far off is a cannon, the report of which is heard in 13 seconds? 8. How many times will 500 oranges fill a fruit dish that holds 1 dozen oranges, and how many will be left over? 9. If you purchase a horse for $100, and pay $40 in cash, how long must you work at the rate of $12 a week to pay the balance? 10. If your pulse beats 4320 times in an hour, how many times will it beat in a day? 11. In what number is 225 contained 25 times? 12. Gold was discovered in California in 1848. How many years ago was that? 13. A farmer sold 60 bushels of apples at $2 a bushel. How many pigs can he buy at $4 each with the money? 14. One farmer gets $200 for his wood, and his neighbor gets $248. The price is $8 a cord. How many cords do they both sell? 15. A boy takes 9 subscriptions to the "Youth's Companion" at $1.75 each. How much money does he receive for them all? 16. A building is 240 feet long and 200 feet wide. How many yards is it around the building? A man owed $5000. 17. He made three payments, one of $1375, another of $964, and another of $2484. How much did he still owe? 18. A car line is 12 miles long. If a car makes 6 round trips daily, how many miles will it run during the month of July? 19. If 8 cords of wood are worth $32, what are 19 cords worth? 20. America was discovered in 1492; the Pilgrims landed at Plymouth in 1620. How many years from the discovery of America to the landing of the Pilgrims? 21. A man paid $175 for a horse, which was 5 tinies as much as he paid for a cow. How much did he pay for both? 22. The multiplicand was 3962; the multiplier was 186. What was the product? 23. If the divisor is 55, and the dividend is 9625, what is the quotient? 24. feet. The floor of a room 16 ft. long contains 192 square 25. How many marble slabs each 10 in. by 2 ft. will cover a floor 10 ft. square? 26. A baker has 200 loaves of bread. He sells of them at 6¢ each, and the remainder at 5¢ each. How much does he get for his bread? 27. If 3 oranges cost 10¢, how many times 10¢ must be paid for a dozen oranges? 28. A farmer clipped 1000 lb. of wool from his sheep. If each fleece weighed 5 lb., how many sheep had he? 29. A sugar plantation produces 2000 barrels of sugar, averaging 250 lb. in weight. At 2¢ a pound, what is the value of the sugar? 30. A man earns $2.50 a day and pays 50¢ a day for board. If he does not work on Sundays, how much will he have left this month after paying his board? U. S. Money and Decimals. Ten dimes make a dollar. 298. What part of a dollar is 1 dime? 2 dimes? 3 dimes? 5 dimes? 10 dimes? How many tenths of a dollar make a dollar? How many tenths make 1 one? A dime is 1 tenth of a dollar. We write dimes (tenths of dollars) in the first place to the right of dollars. Where with reference to ones' place should we write tenths of ones? What do we place between the figures for dollars and the figures for dimes? Should we place the decimal point after ones and before tenths? Tenths occupy the first place to the right of the decimal point. The number five and three-tenths is written 5.3. The number .3, or 0.3, is read three tenths. 299. What part of a dollar is 1 cent? 2¢? How many hundredths of a dollar are 3¢? 5¢? 10¢? 25¢? 50¢? 14 8.01 of a dollar=.01 of a dollar. of a dollar=.02 of a dollar. 5¢=$.05 5 of a dollar=.05 of a dollar. 104=$.10=10% of a dollar=.10 (or .1) of a dollar. 20 204=$.20= of a dollar-.20 (or .2) of a dollar. 254=$.25=20% of a dollar=.25 of a dollar. 100 Which is easier to wrie, of a dollar or .01 of a dollar? |