37 +47 = 119 -19 = 14 -2.7 = 11.3 -3.8 =89 +56 +19 = 1-0. 36 = 2-1.6 = 7/9+2/9= 4.7+2.3= 4.5×2=
8.11+37 +2.89+47 1524 -(524 -548 )
一块正方形布料,既可以都做成边长是8cm的方巾,也可以都做成边长是10cm的方巾,都没有剩余。这块正方形的布料的边长至少是所少厘米?