12345679乘以99999999等于?

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12345679乘以99999999等于?
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12345679乘以99999999等于?
12345679乘以99999999等于?

12345679乘以99999999等于?
你用123456789*(100000000-1)
即12345678900000000-123456789=12345678776543211

12345679*100000000-12345679
=1234567900000000-12345679
=1234567887654321

12345678776543211

12345678776543211

简便计算:123456乘以100000000再减去123456方法比结果更重要!!!

12345679乘以99999999=12345679乘以100000000-12345679
=1234567900000000-12345679
=123456887654321

12345679×99999999=1234567887654321
也可以简便运算。
把99999999×12345679当成
12345679×100000000-12345679
=1234567900000000-12345679
=1234567887654321

87654321