作业帮99999×7+11111×37888×9-111×22
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/05 15:47:53
99999×7+11111×37888×9-111×22
99999×7+11111×37
888×9-111×22
99999×7+11111×37888×9-111×22
99999*7+11111*37
=9*11111*7+1111*37
=11111*63+11111*37
=11111*(63+37)
=11111*100
=1111100
888*9-111*22
=111*8*9-111*22
=111*72-111*22
=111*(72-22)
=111*50
=5550
11111*(9*7+37)=1111100
111*(8*9-22)=5550
5550
11111(7*9+37)=1111100 111(8*9-22)=5550 急需分
99999×7+11111×37
=11111*9*7+11111*37
=11111*(63+37)
=11111*100
=1111100
888×9-111×22
=111*8*9-111*22
=111*(72-22)
=111*50
=5550
对了
11111*36+11111*37=11111*(36+37)=411107
111*72-111*22=111*50=5550
1. 99999×7+11111×37
=11111*9*7+11111*37
=11111*63+11111+37
=11111*100
=1111100
2. 888×9-111×22
=111*(8*9-22)=5550
99999*7+11111*37=11111*63+11111*37=(100-1)*11111=1099989
888*9-111*22=111*72-111*22=50*111=5550
这类题目是提取像类似的东西，也就是考验你因式分解11111*(9*7+37)=1111100
111*(8*9-22)=5550