2.8×16.5÷0.7÷0.11 = (2.8÷0.7)×(16.5÷0.11) = 4×150 = 600
98989898×99999999÷1010101÷11111111=(98989898÷1010101)*(99999999÷11111111)
=98*9=100*9-2*9=900-18=882 是这杨写的
98989898×99999999÷1010101÷11111111=(98989898÷1010101)*(99999999÷11111111)
=98*9=100*9-2*9=900-18=882
五年级上册简便计算
2.8×16.5=46.2,46.2÷0.7=66,66÷0.11=100