脱式计算及答案（带过程）(共1页).docx

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 =13（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