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To find the value of a decimal in the known parts of
1. Multiply the decimal by the number of parts in the next less denomination, and cut off so many places for a remainder, to the right hand, as there are places in the given decimal.
2. Multiply the remainder by the next inferior denomination, anal cut off a remainder as before ; and so on Drough all the parts of the integer, and the several de: nominations standing on the left hand make the answer.
1. What is the value of 95724 of a pound sterling?
1,5040 Ans. 11s. 5d. 1,5qre. 2. What is the value of ,75 of a pound ? Ans. 15s. 3. What is the value of ,85251 of a pound ?
Ans. 175. Od. 2,4qrs. 4. What is the value of ,040625 of a pound ?
Ans. 9 d. 5. Find the value of ,8125 of a shilling. Ans. 93d. 6. What is the value of ,617 of an cwt. ?
Ans. 2qrs. 15lb. 1oz. 10,6dr. 7. Find the value of ,76442 of a pound troy.
Ans. Soz. Spwt. 11gr. 8. What's the value of ,375 of a yd. ? Ans.
Ana. 9. What to che value of ,875 of a hhd. of wine ?
Ans. 55gal. Ogt, ipt.
10. Find the proper quantity of ,089 of a miie.
Ans. 28po. 2yds. Ift. 11,04in 11. Find the proper quantity of ,9075 of an acre.
Ans. Sr. 25.2po 12. What is the value of ,569 of a year of 365 days ?
Ans. 207d. 16h, 261. 24sec. 13. What is the proper quantity of ,002084 of a pound troy?
Ans. 12,00384gr. 14. What is the value of 9046875 of a pound avoirdupois ?
Ans. 12dr 15. What is the value of ,712 of a furlog?
Ans. 28po.Zyd. ift. 11,04in. 16. What is the proper quantity of 142465 of a year?
CONTRACTIONS IN DECIMALS.
PROBLEM I. A CONCISE and easy method to find the decimal of any number of shillings, pence and farthings, (to three places) by INSPECTION.
RULE. 1. Write half the greatest even number of shillings for the first decimal figure.
2. Let the farthings in the given pence and farthings possess the second and third places; observing to increase the second place or place of hundredths, by 5 if the shillings be odil; and the third place by 1 when the far: things exceed 12, and by 2 when they exceed 36.
1. Find the decimal of 7s. 9 d. by inspection.
£ ,391=decimal required.'
2. Find the decimal expression of 168. 41d. and 17s. 8 d.
Ans. £ ,819, and £ ,885 3. Write down £47 18 104 in a decimal expression.
Ans. £47,943 4. Reduce £1 8s 91. to an equivalent decimal.
A short and easy method to find the value of any deci.
maľ of a pound by inspection.
Double the first figure, or place of tenths for shillings, and if the second figure be 5, or inore than 5, reckon another shilling ; then, after this 5 is deducted, call the figures in the second and third places so many farthings, abating 1 when they are above 12, and 2 when above 36, and the result will be the answer.
Note. When the decimal has but 2 figures, if any thing remains after the shillings are taken out, a cypher must be annexed to the left hand, or supposed to be so.
1. Find the value of £. ,679, by inspection.
12s.=double of 6
[deducted out of 7. Add 7d.-29 farthings remain to be added. Deduct d. for the excess of 12.
Ans. 13s. 7d.
Ans. 17s. 61d. 3. Find the value of £. ,842 by inspection.
Ans. 16s. 10d. 4. Find the value of £;. ,097 by inspection.
Ans. 1 s. 114d
REDUCTION OF CURRENCIES.
RULES, FOR reducing the Currencies of the several United States* into Federal Money.
CASE I. To reduce the currencies of the different states, where a dollar is an even number of shillings, to Federal Money.
RULE. 1. When the sum consists of pounds oniy, annex a cypher to the pounds, and divide by half the number of shillings in a collar ; the quotient will be dollars.t
2. But if the sum consists of pounds, shillings, pence, &c. bring the given sum into shillings, and reduce the pence and farthings to a decirnal of a shilling; annex said decimal to the shillings, with a decimal point between, then divide the whole by the number of shillings contained in a dollar, and the quotient will be dollars, cents, mills, &c.
* Formerly the pound was of the same sterling value in all the colonies as in Great-Britain, and a Spanish Dollar worth 4s6--but the legislatures of the different colonies emitted bills of credit, which afterwards depreciated in their value, ir some states more, in others less, &c.
Thus a dollar is reckoned in New-England, New
.458 Kentucky, and
and Tennessee. Maryland. Georgia. New-York, &
38 8s N. Carolina.
Adding a cypher to the pounds, multiplies the whole by 10, bringing them into tenths of a pound then because a dollar is just three-tenths of a pound N. I currency,
dividing those tenths by 5, brings them intc dollars, &c. See Note, page 85.
1. Reduce 731. New-England and Virginia Currency, to Federal Money. 3)730
82431=243 35} 2. Reduce 451. 15s. 71d. New-England currency, to 20
d. A dollar=6)915,625
,625 decimal. Note. 1 farthing is ,25 ) which annex to the pence, 2
,50 Sand divide by 12, you will 3 = 75 have the decimal required. 3. Reduce 345l. 10s. 11d. New-Hampshire, &c. currency, to Spanish milled dollars, or federal money.
£345 10 11%
,9375 decimal. $1151,8229+ Ans. 4. Reduce 1057. 145. 31d. New-York and Nortn-Caroina currency, to federal
money. 6105 14 31
8264,289 06 Ans.
Or & dem. 5. Reduce 4311. New-York currency to federal money. This being pounds only.* 4)4310
$ cts, Ans. $1077)=1077,50
* A dollar is 8s. in this currency-,4=of a pound; therefore, multiply by 10, and divide by 4, brings the pounds into dollars, &c.