12345×6789-12346×6799巧算
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12345×6789-12346×6799巧算12345×6789-12346×6799巧算12345×6789-12346×6799巧算12345×6789-12346×6799=12345*678
12345×6789-12346×6799巧算
12345×6789-12346×6799巧算
12345×6789-12346×6799巧算
12345×6789-12346×6799
=12345*6789-12345*6799-6899
=12345*(-10)-6799
=-123450-6800+1
=-123449-6800
=-130249
12345×6789-12346×6799巧算
巧算12345×6789－12346×6788
12345*12348-12346*12346
12346+12345
24690/12346-12345×12347
12346^2-12345*12347
12345^2-12346^2
12345+6789是什么?
12345加6789!
12345除以12345又12346分之12345
12345²12344×12346＝?12345²-12344×12346＝?
12345²-12344*12346=
12346²-12345*12347=
24690/12346²-12347*12345
24690/12346^2-12345*13247)
123454321/12345*12345-12346*12344=
12345*12345-12344*12346的简便计算
巧算12345×6789-123456×6788