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11. In 213210 grains how many lb. ?

Ans. 37lb. 9grs.

12. In 59lb. 13dwts. 5gr. how many grains?

13. In 8012131 grains how many lb. ?

Ans. 340157gs.

Ans. 1390lb. 110z. 18dwts. 19grs. 14. In 35 ton, 17cwt. 1qr. 23lb. 7oz. 13dr. how many drams? Ans. 29571005dr. 15. In 37cwt. 2qr. 17lb. how many pounds Troy, a pound Avoirdupois being equal to 140z. 11dwt. 15grs. Troy? Ans. 5124lb. 5oz. 10dwt. 11-grs. 16. How many barley corns will reach round the world, supposing it, according to the best calculations, to be 8340 leagues? Ans. 4755801600. 17. In 17 pieces of cloth, each 27 Flemish ells, how many yards? Ans. 344yds. 1qr. 18. How many minutes were there from the birth of CHRIST to the year 1776, allowing the year to consist of 365d. 5h. 48′ 58′′ ? Ans. 934085364" 8.

COMPOUND ADDITION

Compound Addition teacheth to collect several numbers of different denominations into one total.

RULE.*

1. Place the numbers so that those of the same denomination may stand directly under each other, and draw a

line below them.

2. Add

*The reason of this rule is evident from what has been said in simple addition: for, in addition of money, as I in the pence is

equal

2. Add up the figures in the lowest denomination, and find how many ones of the next higher denomination are

contained in their sum.

3. Write down the remainder, and carry the ones to the next denomination; with which proceed as before; and so on, through all the denominations to the highest, whose sum must be all written down; and this sum, together with the several remainders, is the total sum required.

The method of proof is the same as in simple addition.

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equal to 4 in the farthings; I in the shillings, to 12 in the pence; and 1 in the pounds, to 20 in the shillings; therefore, carrying as directed, is nothing more than providing a method of digesting the money, arising from each column, properly in the scale of denominations; and this reasoning will hold good in the addition of compound numbers of denomination whatever.

any

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