递等式计算.(1)46×8﹣120÷15(2)1.02÷(5+0.4×0.25)(3)÷9+×(4)+(﹣)×.
0.6×47+52×+60%
1÷8×9.9+1.9×0.125﹣0.125 0.64×125×2.5.
8795﹣4998+2994﹣3002﹣2008.
98+4×980+59×98.
用简便方法计算 87×2.5+8.7×756.84×10.19.05﹣3.86﹣3.14.