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Write down in figures, at length, the following sums : Eleven, twenty-nine, forty-one, sixty-eight, ninety. One hundred and one, one hundred and ninety-two, four

hundred and sixty-five, nine hundred and ninety-nine. One thousand two hundred and four, six thousand seven

hundred and twenty-nine, nineteen thousand seven hundred and ninety-two, four hundred and twenty-seven thousand two hundred and ninety-six, nine hundred and

forty-two thousand seven hundred. Two millions six hundred and forty-two thousand two hun.

dred and forty-nine, one hundred and ninety-seven mil. lions three hundred and forty-two thousand six hundred and ninety-two.

Write down in words, at length, the following: 7, 14, 20, 29, 38, 56, 89, 102, 169, 374, 4762, 19872,

87634, 765432, 9876543, 98765432, 987654321.

SIMPLE ADDITION

Is the adding of two or more numbers together, (of the same denomination.) to make them one total sum, or number. Some authors affirm, that there are two sorts of Addition, Subtraction, Multiplication and Division, simple and compound; but I am not of that opinion. As, for instance, compound is a mixture of many particulars, of divers denominations, how can 24 dollars be added to 6 pounds of iron? or how can 20 yards of cloth be taken from 100 pounds of sugar?

In Addition, you must place your figures in such a mana ner, that units will stand under units, tens under tens, hun. dreds under hundreds, &c. Begin at the units on the lowest line, and add upwards each column, carrying the number of tens contained in each column to the next, putting down the remainrier; and the sum of the last, or left-hand column, you will put down in full.

Rules for proving Addition. After you add up all, begin at the top, and add downwards; and if that suin and the former agrees, you are right in the work. I prefer the fol. lowing method; to cast the 9's out of each line, and put the excess in the upper fork of a cross, and cast the 9's out of the sum total, and put the excess in the under fork of the same cross; and if they be alike, the question is right

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753274 In casting out the 9's, begin at 8 on the bottom 597487 row, or units' place of that row, and say, 8 and 5 875675 is 13, that is, 4 above 9, which 4 you carry to 7, 516358 (in the same row, or right-hand line of figures,)

making 11, that is, 2 above 9, which 2 you carry 2742794 to 4, which make 6; then carry that 6 to the next

top or bottom figure of the next left-hand line, or row of figures, and proceed throughout. Thus, 6 and 7 is 13, that is, 4 above 9; that 4 and 8 make 12, that is, 3 above 9; that 3 and 7 is 10, that is, 1 above 9; that 1 and 5 is 6, and 3, (the first figure in the next row,) is 9, that is, 0, or nothing; then 6 and 4 is 10, that is, 1 above 9; that i and 2 is 3, and 3 in the next lest-hand row is 6, and 7 is 13, that is, 4 above 9, that 0 or nothing; then 6 and 1 in the next left-hand row is 7, and 7 is 14, that is, 5 above 9; then that 5, and the 5 above the 9, (you must not count 9's in a row of figures, when proving by the cross,) is 10, that is, 1 above 9; that 1 and the next 7 in the left-hand row is 8, and 5 is 13, that is, 4 above 9; that 4 and 8 is 12, that is, 3 above 9; that S and 5 is 8. This 8 is set in the upper part of the

cross, thus:

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794321 936794 549867 716985 493219 714327 140765 321987 749076

671327098 719143217 376097143 915374691 379142760 794263543 310754321 975432794 327640932

409765432 982149654 714067532 971214716 127647143 715698719 976541976 814326714 5497 6:3247

OF MONEY. Rule. Place the numbers, according to their respective value, under each other, dollars under dollars, dimes under dimes, cents under cents, and mills under mills, and proceed exactly as in whole numbers; then place the separatrix in the sum total, directly under the separatrix points above.

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NOTE. As accounts are kept throughout the United States in dollars and cents, and parts of a cent, instead of mills, I will give examples here in that way, for the scholar to practise. I always teach scholars under my tuition, to add and subtract the fractional parts of cents, with very little trouble. The American youths certainly can be taught the fractional parts of a cent, as easy as the English, Irish and Scoteh, are taaght the fractional parts of a penny.

Rule. If halves and quarters are required to be added, call a half 2, as two quarters are equal to a half of any number; and the quarters will always read one-fourth, thus, 1, and three-quarters thus, 1. Therefore, in adding halves and quarters, count the figure over the 4 for so many quarters, and the 2's in the halves for so many quarters; then you have the number of quarters contained in that column, or row of halves and quarters; then find how many 4's in the whole,

and
carry

that number to the cents, and put down the excess thus: If 2 be the excess, put down d; if 3 be the excess, put down #; and if 1 be the excess, put down

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tons. cwt. gr. lbs. oz. dt.

19 14 3 21 12 14 16 12 1 16 14 12 26 17 2 18 10 9 21 15 3 27 15 14 13 18 1 19 12 10 35 16

2 12

13

APOTHECARIES' WEIGHT. lbs. oz. dr. 6. gr. lbs. oz. dr. sc. gr.

168. 07. dr. 80. gr. 3 11 7 2 19

7 1

10

8 8 2 1 11 8 9 6 1 16

9 11 2 16 9 7 1 2 16 9 7 4 0

8 9

10

8 5 0 1 19 7 $ 5 2 17 9 1

13 5 4 6 1 17 8 5 3 0 10

5

18

8 7 5 2 10 5 8 4 1 17

8 1

19 7 8 3 1 13 9 6 1 15

5 7

17

8 97 2 19 9 8 7 0

8
10

8 6 1

12

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10

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LIQUID MEASURE. gal. gt. pt. gin.

hhd. gal. qt.

tun.hhd. gal.gt. 87 3 1 2

76 54 3

7 361 74 1 0 3 19 37 '2

2 19 3 48 0 1 1

91 14 1 8 1 27 2 39 3 1 2 26 38 8

5 2 54 3

LONG MEASURE. yds. ft. in 6.c.

mile. fur. pole.

lea, m. fur pa 84 2 8

18 6 16

8 2 6 32 76 1 10 1

81 7 36 9 1 7 23 61 0 11 2 74 5

18

7 2 5 39 92 2 9 1

42 3 21

5 1 3 24 28 1 7 0 24 2 12 8 1 0 19

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