99*99有木有简便运算?
来源:学生作业学帮网 编辑:学帮网 时间:2024/05/15 04:31:23
99*99有木有简便运算?
99*99
=99*(100-1)
=99*100-99
=9900-99
=9801
99x99
=99x(100-1)
=9900-99
=9801
99*99
=99X(100-1)
=99X100-99X1
=9900-99
=9801
有,
99*99
=99*(100-1)
=99*100-99
=9900-99
=9801
99*99
=99X(100-1)
=99X100-99X1
=9900-99
=9801 99*99
=99X(100-1)
=99X100-99X1
=9900-99
=9801