简便算法 8.05乘以99加8.05 9.98乘以101减9.98简便算法 8.05乘以99加8.05 9.98乘以101减9.98

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简便算法 8.05乘以99加8.05 9.98乘以101减9.98简便算法 8.05乘以99加8.05 9.98乘以101减9.98
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简便算法 8.05乘以99加8.05 9.98乘以101减9.98简便算法 8.05乘以99加8.05 9.98乘以101减9.98
简便算法 8.05乘以99加8.05 9.98乘以101减9.98
简便算法 8.05乘以99加8.05 9.98乘以101减9.98

简便算法 8.05乘以99加8.05 9.98乘以101减9.98简便算法 8.05乘以99加8.05 9.98乘以101减9.98
汗,8.05乘以99加8.05 不就等于8.05乘以100么,也就是805. 9.98乘以101减9.98,等于9.98乘以100等于998

100个8.05 100个9.98