简便运算1234×2345-1233×2346明要交!快
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/25 03:39:11
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简便运算1234×2345-1233×2346明要交!快
简便运算1234×2345-1233×2346
明要交!快
简便运算1234×2345-1233×2346明要交!快
原式=1234*2345-1233*2346+2346-2346
=1234*2345-1234*2346+2346
=1234(2345-2346)+2346
=-1234+2346
=1112
1234x2345-1233x(2345+1)
=2345(1234-1233)-1233
=2345-1233
=1112