7. If a box of crackers will last 8 men 7 days, how long will it last one man?

8. An orchard contains 10 rows of trees, and there are 7 trees in each row: how many trees in the orchard?

8. Enos lived 905 years: how many days did

he live, allowing 365 days to the year?

9. A planter raised 208 bales of cotton, each bale weighing 475 pounds: how many pounds of cotton did he raise?

10. If a garrison of soldiers consume 4865 pounds of bread a day, how many pounds will supply the garrison 408 days? 606 days?

11. What will 508 horses cost, at $125 apiece? 12. What will it cost to build 705 miles of railroad, at $7525 a mile?

LESSON V.

MENTAL EXERCISES.

New Multiplicand Figure, 8.

1. Three times 8 are how many?

7 times 8? 9 times 8? 8 times 8?

5 times 8?

2. How many are 5 times 8? 8 times 5? 6 times 8? 8 times 6? 7 times 8? 8 times 7? 3. There are 8 quarts in one peck: how many 5 pecks? 7 pecks? pints in a gallon: how many pints in 4 gallons? 6 gallons? 8 gallons?

quarts in 3 pecks? 4. There are 8

5. If 5 men can mow a field of grass in 8 days, how long would it take one man to do it?

6. If a quantity of provisions will last 7 men 8 days, how long will it last one man?

7. If 4 pipes will empty a cistern in 8 hours, how long will it take one pipe to empty it?

8. If a man earn 8 dollars a week, how much will he earn in 9 weeks? 11 weeks?

9. A railroad car has 8 wheels: how many wheels has a train of 7 cars? 9 cars?

10. If a horse eat 8 quarts of oats each day, how much will he eat in 6 days? 10 days?

11. If a pint of oil cost 8 cents, what will 8 pints cost?

12. James has 8 marbles, and John has 6 times as many how many marbles has John?

13. What will 8 pounds of beef cost, at 10 cents a pound?

WRITTEN EXERCISES.

Multiplicand or Multiplier ending with Ciphers.

1. Multiply 148000 by 47.

6956000

To shorten the process, write the multiplier under the significant figures of the multiplicand, and, omitting the ciphers in forming the partial products, annex them to the product obtained. The result will be the true product.

NOTE. The teacher should show that the use of the ciphers in forming the partial products would produce the same result.

6. There are 5280 feet in a mile: how many feet in 805 miles?

7. The earth moves in its orbit at an average rate of 68000 miles in an hour: how far does it move in 24 hours? In 48 hours?

8. If a carriage-wheel revolve 280 times in running a mile, how many times will it revolve in running 68 miles? 75 miles?

9. A canal-boat was loaded with 245 bales of hay, weighing 280 pounds each: what was the weight of the cargo?

10. There are 480 sheets of paper in a ream: how many sheets are there in 604 reams?

11. If an acre of land produce 380 pounds of cotton, how many pounds will a plantation of 248 acres produce?

12. A steamboat makes 145 trips in a season, and carries, on an average, 280 passengers each trip: how many passengers does she carry during the season?

LESSON VI.

MENTAL EXERCISES.

New Multiplicand Figure, 9.

1. Three times 9 are how many? 4 times 9? 6 times 9? 8 times 9? 7 times 9? 9 times 9?

2. How many are times 9? 9 times 7?

5 times 9? 9 times 5? 7

10 times 9?
10 times 9? 9 times 10?

3. How many are 5 times 10? 10 times 5? times 10? 10 times 7? 9 times 10? 10 times 9?

7

4. A man gave 7 boys 9 raisins each: how many raisins did he give them all?

5. If a man earn 10 dollars a week, how much will he earn in 8 weeks?

6. Jane writes 9 lines each day at school: how many lines does she write in 8 days?

7. Charles receives 9 dollars a month as errandboy how much will he earn in 10 months?

8. If 7 men can do a piece of work in 9 days, how many men will it take to do the same work in one day?

9. If a quantity of provisions will supply 10 men 9 days, how long will it supply one man? 10. What will 6 barrels of flour cost, at $9 a barrel?

WRITTEN EXERCISES.

Both Multiplicand and Multiplier ending
with Ciphers.

1. Multiply 198000 by 8900.

6. There are 3600 seconds in one hour: how

many seconds are there in 630 hours?

7. Light moves 192000 miles in a second: how far does it move in one hour?

8. A ship has provisions enough to allow the crew 130 pounds a day for 90 days: how many pounds of provisions are aboard?

9. What will 1700 tons of railroad iron cost, at $250 a ton?

10. An army is composed of 54 regiments,