42 AftlTtiMliTlC. 



11. In 2 1 32 10 grains how many lb. ? 



Ans. 371b. 9grs. 



12. In 591b. I3dwts. 5gr. how many grains ? 



Ans. 34oi57grs, 



13. In 8012131 grains how many lb. ? 



Ans. 13901b. iioz. iSdwts. ipgrs- 



14. In 35 ten, lycwt. iqr. 231b. 70Z. I3dr. how many 

 drams ? Ans. 2057ioo5dr. 



15. In 37cwt. 2qr. 1 71b. how many pounds Troy, a pound 

 Avoirdupois being equal to 140Z. iidwt. i5Ygrs. Troy ? 



Ans. 51241b. 50Z. lodwt. ii-|-grse 



16. How many barleycorns will reach round the world, 

 supposing it, according to the best calculations, to be 8343 

 leagues ? Ans. 4755801600. 



17. In 17 pieces of cloth, eaeh 27 Flemish ells, how 

 many yards ? Ans. 344yds. iqr. 



1 8. 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'C 



COMPOUND ADDITION, 



Compound Addition teacheth to collect several numbers of 

 different denominations into one total. 



RULE.* 



I. Place the numbers so that those of the same denom- 

 ination 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 : &r, in addition of money, as i in the pence is 



equal 



