1.7+2.3= 4.5×2= 6.9-2.5= 7.2×0.8=6×3.4= 0.62-0.32= 1.4×0.5= 0.75×100=0.02×0.5= 3.6÷0.3= 6.3÷...
页数：13页|格式：xls下载文档
1.7+2.3= 4.5×2= 6.9-2.5= 7.2×0.8=6×3.4= 0.62-0.32= 1.4×0.5= 0.75×100=0.02×0.5= 3.6÷0.3= 6.3÷...
页数：13页|格式：xls下载文档