计算下面各题,能简算的要简算.
8.5×(2.36+2.42)÷0.25 3.9÷1.3×6 4.25×6.3+3.7×4.25
205×99 25.6﹣7.49﹣2.51 2.5﹣(6.8﹣4.9)×0.8.
计算下面各题,能简算的要简算.
8.5×(2.36+2.42)÷0.25 3.9÷1.3×6 4.25×6.3+3.7×4.25
205×99 25.6﹣7.49﹣2.51 2.5﹣(6.8﹣4.9)×0.8.