用递等式计算.(能简算的要写出简算过程)
(1)8.5×[(2.36+2.42)÷0.25] (2)3.9÷[(1.3+0.6)×6﹣3.6] (3)4.25×6.3+3.7×4.25
(4)205×0.99 (5)25.6﹣7.49﹣2.51 (6)[2.5﹣(6.8﹣4.9)]×0.8.
用递等式计算.(能简算的要写出简算过程)
(1)8.5×[(2.36+2.42)÷0.25] (2)3.9÷[(1.3+0.6)×6﹣3.6] (3)4.25×6.3+3.7×4.25
(4)205×0.99 (5)25.6﹣7.49﹣2.51 (6)[2.5﹣(6.8﹣4.9)]×0.8.