一根电线长47米，另一根电线长32米．两根电线用去同样的长度后，一根电线剩下和另一根剩下的长度比是4：1．两根电线各用去多少米？
看谁算的又对又快．+= += ﹣= ﹣=1﹣= += ﹣= 1﹣=+= ﹣= += +=
看谁算得快．1﹣﹣﹣+0.75+++0.25+0.625．
6﹣3﹣0.625．
计算．
直接写得数．+= ﹣= ﹣= +=﹣= 1﹣= 2﹣﹣= ++=
+
= 
= 
﹣
= 
﹣
=
= 
+
﹣
= 1﹣
=
+
= 
﹣
= 
+
= 
+
=
﹣
﹣
+
+
+0.25+0.625．
﹣3
﹣0.625．
+
= 
﹣
= 
﹣
= 
+
=
﹣
= 1
﹣
= 2﹣
﹣
= 
+
+
=
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