人教版二年级上册数学第四单元《乘法的初步认识》

. 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. 写出乘法算式, 再读一读。写出乘法算式, 再读一读。 2个9相加 9×2 或 2×97个3相加 3×7 或 7×38个5相加 5×8 或 8×5 4个1相加 1×4 或 4×1 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. 写出乘法算式, 再读一读。写出乘法算式, 再读一读。 4+4+4 2+2+2+2+2 6+6+6+6 4×3 或 3×42×5 或 5×2 6 ×4 或 4×6 3个4相加。 5个2相加。 4个6相加。 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.