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Addition_Demonstration.pdf(56 × 100 pixels, file size: 12 KB, MIME type: application/pdf)


This picture shows one strategy to calculate 27 + 59 = 86.



English: This picture shows one strategy to calculate 27 + 59 = 86.
中文: 这个图片展示了计算 27 + 59 = 86 的一种方法。
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Author LitFlower171
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current01:20, 24 January 2019Thumbnail for version as of 01:20, 24 January 201956 × 100 (12 KB)LitFlower171 (talk | contribs)User created page with UploadWizard
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