请写出解题过程:999×998998999-998×999999998
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/10 15:14:55
![请写出解题过程:999×998998999-998×999999998](/uploads/image/z/136290-66-0.jpg?t=%E8%AF%B7%E5%86%99%E5%87%BA%E8%A7%A3%E9%A2%98%E8%BF%87%E7%A8%8B%EF%BC%9A999%C3%97998998999-998%C3%97999999998)
x){~ӶOwX/?_~,KK---RH`aTS'Xv;J*4`,
5t((!聨140 !m=`i4PLd5 6X74/.H̳y y
请写出解题过程:999×998998999-998×999999998
请写出解题过程:
999×998998999-998×999999998
请写出解题过程:999×998998999-998×999999998
=999 x (998998998+1) - 998 x (999999999 -1)
=(999 x 998 x 1001001 +999)-(998 x 999 x1001001 -998)
=998 + 999
=1997