阴阳鬼术免费阅读:用简便算发法计998+1246+9989

来源:百度文库 编辑:查人人中国名人网 时间:2024/10/03 19:16:17

998+1246+9989=(1000-2)+(1250-4)+(10000-11)=1000+1250+10000-2-4-11=12250-17=12233

998+(2+1233+11)+9989=(998+2)+1233+(11+9989)

998+1246+9989
=(1000-2)+(10000-11)+1246
=1233