25×146×4.
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.
口算:420÷60= 1﹣0.1= 99×9.9×0= 1.09+0.91= 4.35×10=30×80= 4.2÷21= 2.5×1.9×4= 88+104+96= 67÷10=
计算下列各题,能简算的用简便方法计算.26﹣3.17﹣7.83 67×38+33×38 125×25×6429.38﹣(19.38﹣4.76) 329×87﹣87×29 5.8﹣3.62﹣0.38+0.2.
用你喜欢的方法计算.9.66÷3.22÷0.25 19.6×10.1 27.35×99+27.35 0.47×9.9.
计算下列各题(能简算要简算).5.18+0.73+0.82 0.75×1.8÷1.5 12.5×7.1×0.86.12×99+6.12 8.6÷0.86+8×0.35 5.6×(18.5﹣8.5÷0.5)