《五年级下册数学练习二十三》由会员分享，可在线阅读，更多相关《五年级下册数学练习二十三（16页珍藏版）》请在金锄头文库上搜索。
1、人教新课标五年级数学下册练习二十三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.小强做作业时，碰到了两道比较大小的题目。 3 72 52 5+ + 3 72 31 43 4（ + ）+
2、+（ + ） 2 31 43 4=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.1、在里填上合适的数。2、用简便方法计算下列各题。7 104 54 5+ = + 2 93 85 8+ +
3、 = +（ + ） 2 93 82 51 33 5+ + 1 41 31 4+ + + 2 39 71 83 8+ + + 5 77 105 8Evaluation 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 Lt
4、d.整数加减混合运算的运算顺序从左往右依次计算括号里面的括号外面的分数加减混合运算的运算顺序和 相同没有括号的分数加减混合运算顺序是 ；有括号的分数加减混合运算的运算顺序是先算 ，后算 。分数加减混合运算的运算顺序是什么？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 Pt
5、y Ltd.Copyright 2004-2011 Aspose Pty Ltd.练习二十 三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.答：第三条边长是 m，它是一个等腰三角形。 1
6、 43 81 2、李明用一根1m长的铁丝围了一个三角形，量得三角形的一边是 m，另一边是 m，第三条边 长多少米？它是一个什么三角形？ 1 43 82 83 8= 8 8 3 8= 6 8= 3 8（米）练习二十 三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 L
7、td.Copyright 2004-2011 Aspose Pty Ltd.练习二十 三答：-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.练习二十 三Evaluation only.E
8、valuation 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.（1）海拔在1000m及1000m以下的面积共占多少？（2）海拔在1000m以上的面积共占多少？（3）你还能提出什么问题？对提出的的问题进行解答？练习二十 三Evaluati
9、on 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.练习二十 三+Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.
10、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.练习二十 三1Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.Created with Aspose.Slides for .NET 3.
11、5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd.Copyright 2004-2011 Aspose Pty Ltd.练习二十 三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.Cop
12、yright 2004-2011 Aspose Pty Ltd.练习二十 三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.练习二十 三Evaluation only.Evaluation
13、 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.通过本节课的学习,你有什么收获?说一说：Evaluation only.Evaluation only. Created with Aspose.Slides for .NET 3.5 Cli
14、ent 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.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.
