小鸡的只数是小鸭的多少倍?
计算(能简算的要简算).5×32×12.5 8×5×(25﹣18 ) 4.63+345+5.37+715 17×58﹣58.
0.5×1.6+0.5×26.4 7.16﹣(3.5﹣3.84) (0.125×8﹣0.5)÷0.25 ﹣(+) 999×778+333×666 (13×0.58﹣4.87+0.42×13﹣5.13)×4.25.
脱式计算,能简算的要简算.(1)125×(8+0.8+0.08) (2)×(﹣÷)(3)2.8×0.4+10.2÷3.4 (4)÷〔﹣(+)〕
计算下面各题,能简算的要写出简算过程1.8×(4.7﹣3.87÷0.9) 7.28﹣3.14+1.72﹣2.864×0.8×2.5×12.5 0.65×14+87×65%﹣65%
脱式计算(能简算的要简算)5+0.45÷0.9﹣1.75 75.36﹣24.9+24.64﹣25.171×40%+28×+0.4 1÷〔(+0.25)×0.125﹣〕