填运算符号.3()3()3()3=13()3()3()3=23()3()3()3=33()3()3()3=8

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填运算符号.3()3()3()3=13()3()3()3=23()3()3()3=33()3()3()3=8填运算符号.3()3()3()3=13()3()3()3=23()3()3()3=33()3

填运算符号.3()3()3()3=13()3()3()3=23()3()3()3=33()3()3()3=8
填运算符号.
3()3()3()3=1
3()3()3()3=2
3()3()3()3=3
3()3()3()3=8

填运算符号.3()3()3()3=13()3()3()3=23()3()3()3=33()3()3()3=8
3(x)3(÷)3(÷)3=1
3(÷)3(+)3(÷)3=2
3(x)3(-)3(-)3=3
3(x)3(-)3(÷)3=8

  1. 乘除除

  2. 除加除

  3. (3减3)*3加3

  4. 3乘3减(3除3)

3(÷)3(x)3(÷)3=1
3(÷)3(+)3(÷)3=2
3(+)3(+)3(÷)3=3
3(x)3(-)3(÷)3=8

3(÷)3(×)3(÷)3=1
3(+)[3(÷)3](-)3=2
]3(+)3(+)3](÷)3=3
3(×)3(-)[3(÷)3]=8