北京版五年级数学上册电子课本教材(义务教育教科书)

一、 小数乘法··································2
二 、小数除法··································18
　　取近似值的方法··································27
　　循环小数··································28
三、 平行四边形、梯形和三角形·················38
　　平行四边形··································39
　　梯形·············································47
　　三角形·············································54
　　组合图形············································· 64
　　认识千米²和公顷 ····························67
四、 统计图表与可能性·····························73
　　平均数·················································· 77
　　统计图···················································82
　　可能性 ···················································86
五、 方程···················································88
　　用字母表示数·································89
　　方程···················································93
六、 数学百花园 ··································99
　　密铺···················································99
　　鸡兔同笼问题··································101
七、总复习·················································102

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