14 ARITHMETIC* 



EXAMPLES. 



Write down in figures the following numbers : 

 Eighty one. Two hundred and eleven. One thousand 

 ?nd thirty nine. A million and a half. A hundred and 

 four-score and five thousand. Eleven thousand million, 

 eleven hundred thousand and eleven. Thirteen billion, six 

 hundred thousand million, four thousand and one.. 



SIMPLE ADDITION. 



Stjnple AddiUofi teacheth t6 collect several, numbers cf 

 jthe same denomination into one total. 



RULE.* 



1. Place the numbers under each other, so that units 

 may stand under units, tens under tei';^, &c. and draw 2. 

 line under them. 



2. Add 



jcoo=M or CID For every C and D, put one at each end, 

 2000=MM it becomes ten times as much. 



5000=100 : orV A line over any number increases 



6ooo=VI '^'^ ^000 ^old. 



iocoo=X or CCIOD 



50000=1033 



60000= LX 



iooooo=C or CCCI333 



1 000000= M or CCCCI30D3 



2 000000= MM 

 &c. Sec. 



* This rule, as well as the method of proof, Is founded on 

 the known axiom, " the whole is equal to the sum of all its parts." 

 Ail that rec^uires explaining is the method of placing the num- 

 bers, 



