推算28÷7= 72÷8= 2700÷9= 40÷8=280÷7= 720÷8= 270÷90= 400÷8=280÷70= 7200÷8= 270÷9= 40000÷8=
计算下面各题,怎样算简便就怎样算. 2.38×6.8+7.62×6.8 12.5×4﹣3.12÷1.2 26.8﹣(4.2+2.6)×1.5 15.84÷[0.8×(7.93﹣2.43)].
脱式计算,能简算的要简算. 0.7×101﹣0.70.125×4.7×8 12.5﹣1.68﹣2.32 567÷20÷5.
脱式计算(分能简算的要简算.) 70.8﹣1.25﹣1.755.81+8.3+4.19+11.78.7×9.9 0.25×17.3×0.40.15×9+0.153.54×0.29﹣0.29×2.54.
6.33×101﹣6.3317.68÷5.2+2.7×1.535.6﹣5×1.73 (1.1﹣0.78)×(2.7﹣1.95)21÷0.25÷0.43.5×0.7+5.5×0.7+0.7.
脱式计算、(能简算的简算) 201×0.65﹣0.653.6×0.7×2.5 6.44×3.7+6.44×6.31.25×39.5×0.8.