简便运算:1356-748+644-1252
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/24 07:16:29
简便运算:1356-748+644-1252
简便运算:1356-748+644-1252
简便运算:1356-748+644-1252
1356-748+644-1252
=1356+644-748-1252
=(1356+644)-(748+1252)
=2000-2000
=0
简便运算:1356-748+644-1252
简便运算:1356-748+644-1252
简便运算:1356-748+644-1252
1356-748+644-1252
=1356+644-748-1252
=(1356+644)-(748+1252)
=2000-2000
=0