In like manner, copy and add the following:

In arranging for addition, dollars should be written under dollars, and cents under cents, in such order that the points stand in a vertical line.

10. Find the sum of $370.21, $2.49, $3.07, and $.94.

11. If 4 loads of coal weigh respectively 1922, 1609, 2100, and 1873 pounds, what is the entire weight?

12. Gave $325 for a horse, $275.50 for a carriage, $75.75 for a harness, and $20.62 for a robe. What was the cost of the whole?

RULE.-1. Write the numbers so that figures of the same order stand in the same column.

2. Beginning at the right, add each column separately, and write the sum, if expressed by one figure, under the column added.

3. If the sum of any column consists of more than one figure, write the unit figure under that column, and add the remaining figure or figures to the next column.

To test the result, perform the addition in the reverse direction, and, if the results agree, the work is probably correct.

The following is also a good exercise for the slate or board:

EXPLANATION.-Write two numbers, as 342 and 534; add them, and use their sum, 876, as a third number; then add the three numbers and use their sum, 1752, for a fourth number, and so on, as far as desired.

342

534

876

1752

Add the following, extending each to the sixth number:

19. 123456+785+12+345 +901 +567+48 = ? 20. 1234567890+8763+347+1037 +198760 = ? 21. 172+4005+3761+20472+367012+19762 = ? 22. $246.26+$85.50+$100.09+$17.75+$.96 = ? 23. $84.90+$760 +$1235.18+ $56.73 +$1000 = ? 24. $4500+$63.19+$508.07+ $24.30+ $300.05 = ?

25. A merchant bought at public sale 852 yards of broadcloth, 750 yards of muslin, 2140 yards of flannel, and 350 yards of silk. How many yards in all ?

26. Bought a pair of boots for $8.50, an umbrella for $3.62, a pair of gloves for $1.25, some collars for $.75, and a hat for $4. What was the whole cost?

27. A lady gave $48.50 for silk for a dress, $16.75 for the trimmings, and $15.62 for making. What was the cost of the dress?

28. Find the sum of 5736 dollars 45 cents, 1200 dollars 80 cents, 405 dollars 15 cents, 50 dollars 9 cents, and 84 cents.

29. A lady paid 12 dollars for a scarf, 3 dollars and 25 cents for a fan, two dollars for a pair of gloves, and 42 cents for a collar. How much did she pay for all?

30. A has $2248, B has $3677, and C has 800 more than A and B together. How many dollars have all?

31. Paid $3456 for a house, $426.75 for painting it, $2809.48 for furniture. What was the cost of the whole?

32. From Chicago to Detroit is 284 miles; Detroit to Suspension Bridge, 230 miles; Suspension Bridge to Albany, 304 miles; Albany to New York, 143 miles. What is the distance from Chicago to New York?

1.32

(38.) $675.84 168.86 10.56

.96

2.64

84.48

11965 944.66

149 18105233 220.34 181777

39. Four loads of coal weigh respectively 2148, 1976, 2209, and 1894 pounds. What is the weight of all?

40. A gentleman gave to each of his five sons $3840.50. What sum did he give to all?

41. A speculator bought, at different times, wheat as follows: 300 bushels, for $480.75; 615 bushels, for $1391.70; 2000 bushels, for $4240; and 1210 bushels, for $2620.80. How much wheat did he purchase, and what did it cost him? For examples 42 to 48 inclusive, use the numbers in a line across the page; for 49 to 52, in columns as arranged.

Specific directions for using the above table for addition may be found under Table No. 1, page 16. Tables Nos. 1 and 2 will afford very profit able drill exercises in all the fundamental rules of Arithmettc.

The teacher will observe that besides the drills in Addition, Subtrac tion, Multiplication, and Division, this and Table No. 1 also afford abundant exercise in Numeration. The exercises of adding, etc., at sight, also involve numerating at sight. Further exercise may be had, by rapidly reading the columns and lines. Also, by mentally prefixing one or more figures to each number, and then reading rapidly by column and by line.

40. 1. How many are 10 cents less 3 cents? 10 cents less 4 cents? 10 cents less 5 cents?

2. Five taken from 10 leave how many? 7 from 10, how many? 8 from 10? 3 from 10?

3. How many tens are 7 tens less 3 tens? 9 tens less 5 tens? 4. How many hundreds are hundreds less 4 hundreds?

9 hundreds less 6 hundreds? 800 less 500?

5. How many thousands are 8 thousands less 3 thousands? 7000 less 4000 ?

9 thousands less 5 thousands?

6. What is the unit of 6 miles ? Of 12 acres?

7. Can 6 miles be taken from 12 acres? Why not?

8. Can 5 hundreds be taken from 8 thousands? 4 tens from 7 tens? Why?

9. Only what kind of a number can be taken from another?

PRINCIPLE.-Any number, or any order of units, can be subtracted only from a like number, or a like order of units.

41. Subtraction is the process of finding the difference between two like numbers.

1. The minuend is the number from which the other is taken.

2. The subtrahend is the number to be taken from the minuend.

3. The difference or remainder is the number found by sudtraction.

42. The sign of subtraction is. It is read minus, and signifies less.

Thus, 9-63 is read, 9 minus 6 equals 3, or 9 less 6 equals 3.