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1、Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 陆地面积 水面面积 公顷 3公顷 290公顷 北京颐和园占地290公顷，其中水面 面积大约是陆地
2、面积的3倍。颐和园 的陆地和水面大约各有多少公顷？ 陆地面积水面面积颐和园的占地面积 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 解：设颐和
3、园的陆地大约公顷， 水面大约有3公顷。 北京颐和园占地290公顷，其中水面 面积大约是陆地面积的3倍。颐和园 的陆地和水面大约各有多少公顷？ 陆地面积水面面积颐和园的占地面积 3 290 4 290 72.5 372.53 217.5 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 As
4、pose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 答：颐和园的陆地大约有72.5公 顷，水面大约有217.5公顷。 北京颐和园占地290公顷，其中水面面 积大约是陆地面积的3倍。颐和园的陆 地和水面大约各有多少公顷？ 72.5217.5290（公顷） 217.572.53 我这样检验 。 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with A
5、spose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 例2这类方程的解题策略 理解题意，找准数量 判定倍数，一倍几倍 解设未知，列出方程 解出方程，检验作答 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created wi
6、th Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 练一练 地球表面海洋面积大约是陆地面 积的2.4倍，比陆地面积多2.1亿平方 千米。海洋面积和陆地面积大约各有 多少亿平方千米？ 海洋面积陆地面积=多出的2.1亿平方千米 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET
7、 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 解：设陆地面积大约亿平方千米， 海洋面积大约有2.4亿平方千米 。 海洋面积陆地面积=多出的2.1亿平方千米 2.4 2.1 1.4 2.1 1.5 2.42.41.5 3.6 答：陆地面积大约有1.5亿平方千米， 海洋面积大约有3
8、.6亿平方千米。 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 练习二 解：560 12 解：0.812 15 2360 3.62.812 解
9、方程。 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 在括号里填上含有字母的式子。 黄花有朵，红花的朵数是黄花的3倍。 红花有（ ）朵，黄花和
10、红花一共有 （ ）朵，红花比黄花多（ ）朵。 练习二 3 4 2 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 在括号里填上含有字母的式子。
11、商店运来电冰箱台，运来洗衣机的 台数是电冰箱的2.3倍。运来洗衣机 （ ）台，电冰箱和洗衣机一共有 （ ）台，电冰箱比洗衣机少（ ） 台。 练习二 2.3 3.3 1.3 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011
12、 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 练习二 爸爸和小红今年各多少岁? 爸爸年龄小红年龄=30岁 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更
13、多免费教学资料请到 http:/下载！ 430 330 10 441040 答：小红今年10岁，爸爸今年40岁。 练习二 爸爸年龄小红年龄=30岁 解：设小红今年岁，爸爸今年4岁。 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004
14、-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 同学们参观“远离毒品”展览。四、五 年级一共去了264人，五年级去的人数是四 年级的1.2倍。两个年级各去了多少人？ 练习二 四年级人数五年级人数=264人 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-201
15、1 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 解：设四年级去了人， 五年级去了1.2人。 1.2264 2.2264 120 1.21.2120144 答：四年级去了120人，五年级去了144人。 练习二 四年级人数五年级人数=264人 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NE
16、T 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 一个自然保护区里有天鹅和丹顶 鹤共960只。天鹅的只数是丹顶鹤的 2.2倍。天鹅和丹顶鹤各有多少只？ 练习二 天鹅只数丹顶鹤只数960只 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with
17、Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 解：设丹顶鹤有只，天鹅有2.2只。 2.2960 3.2960 300 2.22.2300660 答：丹顶鹤有300只，天鹅有660只。 练习二 天鹅只数丹顶鹤只数960只 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3
18、.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 解：2060 3 18260 5612.1 6. 解方程。 解：1112.1 1.1 解：1.68 5 6.658 424 解： 324 8 Evaluation only.Evaluation only. Created with A
19、spose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 解：0.51 2 1.51 1.90.49.2 解： 2.39.2 4 Evaluation only.Evaluation only. Created with Aspose.Slides
20、 for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 小丽走的路程小明走的路程960米 解：设经过分钟两人相遇。 5862960 120960 8 Evaluation only.Evaluation only. Created with Aspose.Slides
21、for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 甲船开的路程乙船开的路程182千米 解：设小时两船相距182千米。 24.527.5182 52182 3.5 Evaluation only.Evaluation only. Created with Aspose
22、.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 8张光盘价钱10张光盘价钱216元 解：设平均每张光盘元。 810216 18216 12 Evaluation only.Evaluation only. Created with Aspose.S
23、lides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 五年级门票钱四年级门票钱65元 解：设每张门票元。 14513265 1365 5 Evaluation only.Evaluation only. Created with Aspose.Slides
24、for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 第二小队棵树第一小队棵树20棵 解：设平均每人植树棵。 14 1020 420 5 Evaluation only.Evaluation only. Created with Aspose.Slides for .N
25、ET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！ 甲跑的路程乙跑的路程1圈400米 解：设经过分甲比乙多跑1圈。 280 240400 40400 10 Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd. 更多免费教学资料请到 http:/下载！