多边形的面积专项练习题(二)课时.pdf

1/5 尚师教育教师教案表学生签字：_课题多边形的面积专项练习题（二）授课时间年月日星期时分-时分教师伍旋学生年级学科数学作业完成情况教案内容教案目标教案重点教案难点新课内容数学多边形的面积综合练习题1、用字母表示梯形的面积计算公式是（）2、2.65平方 M=（）平方分 M 3600 平方 M=（）公顷3、一个平行四边形，底是1.2m，高是0.8m，与它等底等高的三角形的面积是（）m2。4、一个梯形的上底扩大2 倍，下底也扩大 2 倍，高不变，那么它的面积扩大（）倍。5、一个三角形面积是32m2，高是 4m，底是（）。6、判断。（正确的在括号里打“”，错误的打“”）（1）同底同高的两个三角形，形状不一定相同，但它们的面积一定相等。（）（2）平行四边形的面积是三角形面积的2 倍。（）（3）直角三角形的面积等于两条直角边的长度乘积除以2。（）（4）两个花园的周长相等，它们的面积也一定相等。（）7、选择。（把正确答案的序号填入括号里）（1）一个三角形与一个平行四边形的高相等，面积也相等，平行四边形的底15cm，三角形的底长（）cm。10 15 30 20（2）已知梯形的面积是42.5dm2，上底是 3dm，下底是 7dm，它的高是（）42.52（3+7）42.5（3+7）42.5（3+7-3）（3）篮球场占地 0.63（）公顷平方 M M 平方千 M（4）如果把一个平行四边形的底和高都除以2，它的面积比原来（）缩小 2 倍2/5 扩大 4 倍缩小 4 倍8、计算下面各图形的面积：（单位：cm）应用在线：9、有一块梯形麦田，上底28m，下底 32m，高 20m。在这块田里共收小麦301.2千克，平均每方 M 收小麦多少千克？10、某校操场原有面积2800m2，因扩建，把宽从40m 增加到 50m，长不变。扩建后的操场面积比原来增加多少m2？三、实践平台。11.求组合图形的面积：（单位：m）18 12 15 16 18.4 15 8 文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q103/5 12.求阴影部分的面积四、智力冲浪（5 分）13、有一块平行四边形菜地（如图），DE=EF=FC，GB=1/3BD，三角形GEF种的是小白菜，面积是8 m2，求这块平行四边形菜地的面积是多少m2？A B G6 16 14 文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q104/5 14三角形的底边长26M，比高长 16M，这个三角形的面积是多少？15一块平行四边形的瓜地，底长22.6M，高 18M，如果平均每平方M 栽瓜苗 45 棵，共栽多少棵？16一块梯形的地面积为45 平方 M，下底是 10M；上底是 5M，求它的高是多少M？17某茶园有一块长方形地，共栽种96000 棵茶树，平均每棵茶树占地0.5 平方 M，这块地文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 ZA2B2P10V4Q10文档编码:CT7P3Q6M10X1 HH5X4J10I7Y7 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