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五年级上册数学精品试卷多边形的面积综合习题精编!

  • 2026-08-05 15:56:20
五年级上册数学精品试卷多边形的面积综合习题精编!

一、填空。(每空2分,共28分)

1.两个完全一样的三角形都能拼成一个(      )形。2.一个平行四边形的面积是4.5平方米,底边上的高是1.5米,底长是(     )米。

3.两个完全一样的直角梯形能拼成一个(          )形,也能拼成一个(        )形。

4.一个三角形的面积是2.5平方米,与它等底等高的平行四边形的面积是(        )平方米。

5.一个直角三角形的两条直角边分别是3分米、4分米,这个三角形的面积是(       )平方分米。

6.一个梯形的高是1.2米,上下底的和是3.6米,这个梯形的面积是(      )平方米。

7.在下图形中,当a缩短成一个点,也就是a=0时,这个图形就变成了(        ),公式S=(a+b)h÷2就变成了(             );当a=b时,这个图形就变成了(         ),公式S=(a+b)h÷2就变成了(               )。

8.一个平行四边形的面积是9平方分米,底扩大4倍,高不变,它的面积是(        )平方分米。

9.一个等腰直角三角形,腰长16厘米,面积是(    )平方厘米。

10.如图,平行四边形的面积24.8平方厘米,阴影部分的面积是(       )平方厘米。

二、判断,正确的在括号里画“√”、错误的画“×”。(10分)

1.一个三角形底长8厘米,高5厘米,它的面积是40平方厘米。  (     )

2.面积相等的三角形形状也相等。  (      )

3.任意两个三角形都可以拼成一个平行四边形。(    )               4.任意一个梯形都能分成两个一样的平行四边形。              (        )

5.如果两个三角形的形状不同,它们面积一定不相等。          (     )

三、选择符合要求的答案,把字母填在括号里。(每空2分,共14分)

1.一个三角形的底扩大3倍,高不变,它的面积(   )。

A.扩大3倍        B.不变、     C.扩大6倍

2.用木条钉成一个长方形,沿对角线拉成一个平行四边形。这个平行四边形与原来的长方形相比:平行四边形的周长(  ),平行四边形的面积(   )。

A.不变          B.变大            C.变小

3.三角形的底和高都扩大2倍,它的面积扩大(     )。

A.2倍             B.4倍              C.8倍

4.下面第(   )组中的两个图形不能拼成平行四边形。

5.下图中,甲、乙两个三角形的面积比较,(    )。

A.甲比乙大    B.甲比乙小       C.甲乙面积相等

6.一堆钢管,最上层4根,最下层10根,相邻两层均相差1根,这堆钢管共(       )

A.35根          B.42根          C.49根

五、计算下面各图形的面积。(12分)

六、计算下面各图形的面积。(16分)

七、解决问题。(15分)

1.一张长方形的铁板,从长边的中点到两个宽边的中点分别连一条线,沿这两条线剪下来两个角。求剩下图形的面积是多少?(7分)

2.一块铁板的形状如下图。在这块铁板的两面涂上油漆,涂油漆的面积是多少?(单位:分米)(8分)

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  1. CONNECT:[ UseTime:0.000522s ] mysql:host=127.0.0.1;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000584s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.002120s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000296s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000725s ]
  6. SELECT * FROM `set` [ RunTime:0.000242s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000776s ]
  8. SELECT * FROM `article` WHERE `id` = 509551 LIMIT 1 [ RunTime:0.000431s ]
  9. UPDATE `article` SET `lasttime` = 1785976194 WHERE `id` = 509551 [ RunTime:0.006975s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000287s ]
  11. SELECT * FROM `article` WHERE `id` < 509551 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000445s ]
  12. SELECT * FROM `article` WHERE `id` > 509551 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000550s ]
  13. SELECT * FROM `article` WHERE `id` < 509551 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001129s ]
  14. SELECT * FROM `article` WHERE `id` < 509551 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001321s ]
  15. SELECT * FROM `article` WHERE `id` < 509551 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.004481s ]
0.088057s