1.æ ¹æ®ä¸é¢çå æ³ç®å¼ç¡®å®å¼ä¸å个åæ¯çå¼ã
FIFTY
FOUR
FOUR
+ TWO
------------
SIXTY
(FOUR+12为å®å
¨å¹³æ¹æ°)
RRO=10æRRO=20;Oæ¯åæ°ï¼
RRO=10,UUW=9æUUW=19;
RRO=20,UUW=8æUUW=18;
F=5æF=4,S=F+1ï¼FOOT<10æFOOT>=20
63*63=3963,64*64=4096;65*65=4225;66*66=4356;67*67=4489,68*68=4624,
69*69=4761,70*70=4900,71*71=5041,72*72=5184,73*73=5329,74*74=5476,
75*75=5625,76*76=5776,77*77=5929,78*78=6085;
(FOUR+12为å®å
¨å¹³æ¹æ°),Oæ¯åæ°ï¼FOUR为å个ä¸åçæ°åï¼å»æä¸åçç
65*65=4225;68*68=4624,71*71=5041,75*75=5625;
åFOURå¯è½ä¸º4213ï¼4612ï¼5029ï¼5613ï¼
èRRO=10æRRO=20;æ£éªä¹å¾FOUR为4612ï¼S=5ï¼
RRO=10,UUW=9æUUW=19;W=7.
466Tï¼1>=20,T>=3;T=3,X=0;T=5,X=2(ä¸è¡);T=8,X=5(ä¸è¡);T=9,X=6(ä¸è¡)
æ以T=3,X=0ï¼IåYæ æ³æ¨ç .
æ®æ¤å¯å¾ä¸é¢ç«å¼
4I43Y
4612
4612
+ 376
------------
5I03Y
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