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1、精选优质文档-倾情为你奉上627.1+2.9 =440.2+2.9 =443.14.20.25 =（4+0.2）0.25 =40.25+0.20.25 =1+0.05 =1.05 5.24.3+0.84.3 =（5.2+0.8）4.3 =64.3 =25.88.5+1.50.254 =8.5+64 =8.5+24 =32.50.250.8+2.5% =0.2+2.5% =0.225 321252.5 =481252.5 =8125（42.5） =100010 =10000 94（6.848.5-31.460.55） =94（58.14-57.2） =940.94 =100130.42.5 =1
2、3（0.42.5） =131 =13 1.252.50.8 =（1.250.8）2.5 =12.5 =2.5 1.5101-1.5 =1.5（101-1） =1.5100 =150 4.8101 =4.8100+4.81 =480+4.8 =484.83.254.7-7.8 =15.275-7.8 =7.475 0.57+0.430.24 =0.57+0.1032 =0.673294553 =1893 =63 15232 =4562 =228 43126 =5166 =3096200+2533 =200+825 =1025 （25+26）48 =5148 =2448576-（290+107） =576-397 =179 649+124-556 =773-556 =2174.82-5.20.80.6 =4.82-6.50.6 =4.82-3.9 =0.92专心-专注-专业