口算.6.3÷0.21= 3.9÷0.13= 1.1×1.1= 0.6×0.7=0.9﹣0.32= 1.59+5.31= 1.25×0.8= 6.5÷0.5=0.78÷2=
递等式计算 (3.2+4.06)÷6.0526.8﹣1.2×43.5×3+3.5×704×(3.2﹣0.8)÷1.2.
脱式计算.(能简算的要简算) 6.8×0.75÷0.513.5÷2.5﹣2.750.125×0.25×320.9+9.9+99.9+0.3.
用自己喜欢的方法计算下面各题. 1.28+0.86+38.720.45÷0.6÷0.532×0.25×1.25 0.78÷0.13×0.213.6×9+40.6÷21.08×0.8÷0.27.
口算我最行. 0.25×2=89.3×0.6=5÷0.25=6.5×6.7+3.5×6.7= 9.6÷32=65÷1.3=0.28÷4=50×7.89×0.2= 1÷4=28÷0.02=28÷0.5=0.4×3.2×2.5=
能用简便方法的用简便方法计算: 25×32×1.255.4×58+42×5.4 6.25÷(0.25×4)