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青岛版三年级上册数学———两位数乘两位数笔算乘法[进位]
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Copyright 2004-2011 Aspose Pty Ltd.
2X4=
40X20=
22X3=
22X30=
24X2=
24X20=
11X3=
11X30=
4X22=
40X22=
32X3=
32X30=
41X2=
41X20=
12X4=
12X40=
2X33=
20X33=
8
660
880
480
960
820
480
660
330
80
66
48
96
82
48
66
33
88
Evaluation only.
Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.
Copyright 2004-2011 Aspose Pty Ltd.
(进位 )
Evaluation only.
Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.
Copyright 2004-2011 Aspose Pty Ltd.
Evaluation only.
Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.
Copyright 2004-2011 Aspose Pty Ltd.
Evaluation only.
Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.
Copyright 2004-2011 Aspose Pty Ltd.
Evaluation only.
Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.
Copyright 2004-2011 Aspose Pty Ltd.
三种估算方法你都学会了吗?
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Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.
Copyright 2004-2011 Aspose Pty Ltd.
估一估,算一算
34X28=
46X13=
15X67=
23X46=
952
598
1005
1058
Evaluation only.
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太平洋中的复活节岛,正以每年15厘米的速度
向东漂移。从现在开始到2050年,这个岛向东
漂移多少厘米?
Evaluation only.
Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.
Copyright 2004-2011 Aspose Pty Ltd.
Evaluation only.
Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0.
Copyright 2004-2011 Aspose Pty Ltd.
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