Εικόνες σελίδας
PDF
Ηλεκτρ. έκδοση
[merged small][merged small][merged small][merged small][merged small][merged small][merged small][ocr errors][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small][merged small]

When the nitipler consists of several figures.

RULE. The multip :er being p-ced under the multiplicand, units under units, tens under tens, &c. multiply by each significant figure in the multiplier separately, placing the first figure in each product exactly under its muh per: then add the several products togetha in the same order as they sin, and their sum will be the total product

EXA PLES.

What number is e.u. 47 times 365?

Multiplicand, 365
Multiplier,

47

[blocks in formation]
[blocks in formation]

1

3)

15. What is the total product of 7608 times 365432.

Ans. 2780206656.

16. What number is equal to 40003 times 4897685. Ans. 195922093055.

CASE III.

When there are ciphers on the right hand of either or both of the factors, neglect those ciphers; then place the significant figures under one another, and multiply by them uly, and to the right ha. d of the product, place as many phers as were omitted in both the factors.

[blocks in formation]

7065000 × 8700=61465500000

749643000 × 695000=521001885000000
360000 × 1200000=432000000000

CASE IV.

When the multiplier is a composite number, that is, when is produced by multiplying any two numbers in the table together, multiply first by one of those figures, in that

product by the other, and the last product will be the total

[blocks in formation]

To multiply by 10, 100, 1000, &c. avex to the multi plicand all the ciphers in the multipher, and it will make the product required

EXAMPLES.

1. Multiply 365 by 10.
2. Multiply 4657 by 100.
3. Multiply 5224 by 1000.
4. Multiply 26460 by 10900.

Ans. 3650 Ans. 465700 Ans. 5224000 Ans. 264600000

EXAMPLES FOR EXERCISE.

Ans. 10835863300 Ans. 515309055188.” Ans. 584113330416. Ans. 533276081481. Ans. 1960310474010.

1. Multiply 1203450 by 9004. 2. Multiply 9087061 by 56708. 3. Multiply 8706544 by 67089. 4 Multiply 4321209 by 123409 5. Multiply 3456789 by 567090. 6. Multiply 8496427 by 874359.' Ans. 7428927415293. 98763542 × 98763542-8754237228385764.

Application and Use of Multiplication.

In making out bills of parcels, and in finding the value goods; when the price of one vard, pound, &c. is given Federal Money) to find the value of the whole quantity.

[ocr errors]

RULE.-Multiply the given price and quantity together, as in whole numbers, and the separatrix will be as many figures from the ight hand in the product as in the given price.

EXAMPLES.

1. What will 35 yards of broad- { $. d. c. m. cloth come to, at

3, 4 9 6 per yard? 35

17 4 8 0

104 8 8

Ans. $122, 3 6 0=122 dol

[lars, 36 cents.

12. What cost 35 lb. cheese at 8 cents per lb. ?

,08

Ans. $2, 80-2 dollars 80 cents.

Ans. $43, 79 cents.

3. What is the value of 29 pairs of men's shoes, at 1 dol51 cents per pair? 4. What cost 131 yards of Irish linen, at 38 cents per yard? Ans. $49, 78 cents. 5. What cost 140 reams of paper, at 2 dollars 35 cents per ream? Ans. $329: 6. What cost 144 lb. of hyson tea, at 3 dollars 51 cents per lb. ? Ans $505, 44 cents. 7. What cost 94 bushels of oats, at 33 cents per bushe1? Ans. $31, 2 cents. 8. What do 50 firkins of butter come to, at 7 dollars 1 cents per firkin? Ans. $357. 9. What cost 12 cwt. of Malaga raisins, at 7 dollars 31 cents per cwt. ? Ans. $87, 72 cents. 10. Bought 37 horses for shipping, at 52 dollars per head : what do they come to?

Ans. $1924.

11. What is the amount of 500 lbs. of hog's-lard, at 15 cents per lb. ? Ans. $75 12. What is the value of 75 yards of satin, at 3 dollars 75 cents per yard?

Ans. $281, 25. 14 dols. 67 cents Ans. $5383, 89 cents.

13. What cost 367 acres of land, at per acre?

cents per bl. ?

14. What does 857 bls. pork come to, at 18 duls. G Ans. $16223, 1 cent. 15. What does 15 tuns of hay come to, at 20 dols. 78) cts. per tun? Ans. $311, 70 cents.

16. Find the amount of the following

[blocks in formation]

NOTE. The value of 100lbs. of any article will be jus as many dollars as the article is cents a pound.

*For 100 lb. at 1 cent per lb.=100 cents=1 dollar.

100 lb. of beef at 4 cents a lb. comes to 400 cents-4 dollars, &c.

DIVISION OF WHOLE NUMBERS.

SIMPLE DIVISION teaches to find how many time one whole number is contained in another; and also wha remains; and is a concise way of performing several sub tractions.

Four principal parts are to be noticed in Division: 1. The Dividend, or number given to be divided. 2. The Divisor, or number given to divide by.

[ocr errors]

3. The Quotient, or answer to the question, which shows how many times the divisor is contained in the dividend.

4. The Remainder, which is always less than the divisor and of the same name with the Dividend.

[ocr errors]
« ΠροηγούμενηΣυνέχεια »