ORAL AND SLATE EXERCISES

25. 1. William having a half-dollar, gave 10 cents for a book and 15 cents for a slate.

How many cents had he left?

WRITTEN. 50 cts. (10 cts. + 15 cts.) what he had left.

ORAL. He had left the difference between 50 cents and the sum of 10 cents and 15 cents, which is 25 cents.

2. Mary gave 6 cents for a spool of thread, and 10 cents for some buttons. How much change should she receive for a quarter-dollar?

3. A man having $40, paid $15 for a coat, $10 for a vest, and $9 for a pair of boots. How much had he left?

4. A farmer gave a cow and $15 in money for a wagon valued at $60. How much did he get for his cow?

5. If your slate is 10 in. long and 6 in. wide, how many inches around the slate? How many more inches in length than in width?

6. A man gave his watch and $10 in money for a harness valued at $75. How much did he get for his watch?

7. A man paid $10.75 for sugar, and $5.25 for coffee. What did he pay for both? How much more for the sugar than for the coffee?

Supply the proper number in place of (?):

SLATE OR BLACKBOARD DRILL.

26. Write the two numbers 344 and 579, and add them without drawing a line, and write their sum 923 as the third number; then add the three numbers, and write their sum, 1846, as the fourth number, and so on.

The same example may be used for exercise in subtraction, by subtracting from the last result each of the preceding numbers in succession, until nothing remains.

(1.) 344

579

923

1846

3692

In the same manner, copy, add, and prove the following, extending each to the sixth number:

27. Write upon the board, or read from the open book:

Let some pupil add the right-hand column, thus, “9, 17, 24, 27, 33, 42 units, equal to 4 tens and 2 units; write the 2 units under the column added, and add the 4 tens to the next column." The next pupil promptly begins the second column with the 4 tens reserved, thus, "4, 12, 14, 18, 23, 26, 34 tens, equal to 3 hundreds and 4 tens, etc." So in quick succession let each column be added upwards, then downwards, then from right to left, etc., until the whole class have been exercised upon this example.

In like manner, drill upon the following:

(2.)

(1.) 267189

485736

918753

592847

703928

564789

3 5 3 3 2 4 2

ORAL

AND SLATE EXERCISES.

27. 1. Martin, having 27 marbles, gave 12 to Albert, and lost 5. How many had he left ?

WRITTEN SOLUTION. 27-(12+5) = the marbles he had left.

2. Amasa has 45 cts. in three boxes; in the first are 15 cts., in the second 20 cts. How many cents are in the third box?

3. James had 35 cents, which was 1 dime more than Etta How many cents had Etta?

had.

4. A drover bought 8 sheep of one man, 12 of another, and 15 of another. He afterwards sold 10 and butchered 5. How many sheep had he left?

5. George was sent to the store with 50 cents, and returned with 15 cents, and tea costing 20 cents, rice 8 cents, and sugar 10 cents. Did he receive the right change?

6. From a piece of calico containing 26 yd. Jane bought a dress of 9 yd., and Josephine another of 10 yd. How many yards were left in the piece?

7. A man bought a watch for $40, a chain for $15, and a key for $3, and he sold the whole for $50. How much did he lose by the bargain?

8. In an orchard are 500 apple trees, 300 peach trees, 100 pear trees, and 50 cherry trees. How many trees in the orchard? How many less pear trees than apple trees? How many more apple trees than all the others together?

9. Two men being 850 miles apart, start and travel towards each other. When one travels 300 miles and the other 250 miles, how far apart are they?

10. Richard, receiving $45 for labor, paid $20 for a cow, $7 for a barrel of flour, and $9 for three cords of wood. How much had he left?

FOR WRITTEN SOLUTION.

28. 1. Sold a book for $3.75 that cost $24. What was my gain?

2. A man gave his note for $32.45. He paid at one time $7.80, and at another $4.84. How much remained unpaid?

3. A man paid $140 for a horse and $165 for a carriage. He sold them both for $300. How much did he gain or lose? 4. A father divided his property among his children as follows: He gave to Charles $17510, to Henry $21437, to William $15198, to Amelia $13087, to Sarah $15193, and to Susan $11981.

(a.) How much did he give to his three sons?

(b.) How much to his three daughters?

(c.) How much to all his children?

(d.) How much more did he give to his sons than to his daughters?

5. A flour merchant having 700 barrels of flour on hand, sold 278 barrels to one man, and 142 barrels to another. How many barrels had he left?

6. How many feet around a piece of land that is 1824 feet long and 1137 feet wide?

7. I owe three notes; one for $400, one for $150, and one for $50.75. Having paid $450, how much do I still owe?

8. Alaska contains 577000 square miles, and Texas 265780. Which is the larger, and how much?

9. California contains 158360 sq. mi., and Texas 265780 square miles. How much larger is Texas than California? 10. 670-540-175+25-215+23-75 ==

11. 18+126-75+51 +96-38+200-60 =

12. A farmer sold a ton of hay for $12.50, and a cord of wood for $3.25. He received in payment, a barrel of flour worth $7.60, and the remainder in money. How much money

did he receive?

13. A grocer sold some tea for 80 cents, some butter for $2.30, some eggs for 53 cents, and some sugar for $1.15. How much change should he return for a five-dollar bill?

14. Mary went shopping and had 2 five-dollar bills. She bought a dress for $7.25, trimmings for $2.37, some thread for $.15, and some tape and needles for twenty cents. How much money had she left?

15. Henry gave one dollar and a half for a pair of skates, seventy-five cents for a cap, thirty-seven cents for a ball, half a dollar for a knife, two dollars and a quarter for a sled, and had one dollar left. How much money had he at first?

16. A man owed $427.50. He paid at one time $125.75, at another $100, and at another $50.25. What remained unpaid?

17. A grain dealer bought 5075 bu. of wheat at one time, and 12300 bu. at another. He sold 3763 bu. to one customer, and 4000 bu. to another. How many bushels had he left?

18. A man having $12470, paid $4070 for a house, $927 for furniture, and $1000 for improvements. How much money had he left?

19. Gave $150 for a horse, $175.84 for a carriage, and $62.50 for a harness, and sold the whole for $390.50. What did I gain?

20. A man bought four city lots, for which he paid $15760. For the first he paid $2175, for the second $3794, and for the third $4587; how much did he pay for the fourth?

21. A speculator gained $5760, and afterward lost $2746; at another time he gained $3575, and then lost $4632. How much did his gains exceed his losses?