列竖式计算.246×34= 145×12= 240×50= 960÷32= 576÷18= 196÷39=
(78.6﹣0.786×25十75%×21.4)÷15×1997 8888008×1252001×3.14+200.1×31.4+20.01×314 0.525÷13.125÷4×85.2.
6.4×2.5+2×3.4+25% 15.7×7.7+1.57×22+1.5712.56﹣(+2.56+) ×﹣×2010× 3.65÷〔0.1÷(2.1﹣2.09)〕
①②③④99×88+88×77+77×66+66×55.
(78.6﹣0.786×25十75%×21.4)÷15×1997.
324×11.25+65.8×112.5 8888008×125 0.525÷13 125÷4×85.2