计算下图的体积。
脱式计算.(能简算的要简算)6.8×0.75÷0.5 13.5÷2.5﹣2.75 0.125×0.25×32 0.9+9.9+99.9+0.3.
用自己喜欢的方法计算下面各题.1.28+0.86+38.72 0.45÷0.6÷0.5 32×0.25×1.250.78÷0.13×0.2 13.6×9+40.6÷2 1.08×0.8÷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:25×32×1.25 5.4×58+42×5.4 6.25÷(0.25×4)
计算,能简算的要简算.17.5÷12.5×1.4 1.58×99+1.58 6.4×4.5+3.6×4.5.