【练一练】1.(1)(2)120×3/5×2/3=48(人)答:科技组有48人。2.(1)10×4/5×5/8=5(吨)(2)36×2/3×3/4=18(个)3.3/2 3/2 20 8 16/5 3/84.660×2/3×1/4=110(个)p{text-indent:2em;margin:0px;margin-top:0px;margin-left:0px;margin-right:0px;line-height:100%;text-justify:inter-ideograph;text-align:justify;font-family:"Times New Roman";font-size:100%}答:全国严重缺水的城市大约有110个。5.820×1/4×8/5=328(页)p{text-indent:2em;margin:0px;margin-top:0px;margin-left:0px;margin-right:0px;line-height:100%;text-justify:inter-ideograph;text-align:justify;font-family:"Times New Roman";font-size:100%}答:第二周看了328页。6.5×6÷(5×2/5)=30×8/5=15(次)p{text-indent:2em;margin:0px;margin-top:0px;margin-left:0px;margin-right:0px;line-height:100%;text-justify:inter-ideograph;text-align:justify;font-family:"Times New Roman";font-size:100%}答:改用小船运,15次才能运完。p{text-indent:2em;margin:0px;margin-top:0px;mar |