四年级数学题，填运算符号。

Question

3()3()3()3=1
3()3()3()3=2
3()3()3()3=3
3()3()3()3=8

Answer 1

乘除除

除加除

（3减3）*3加3


3乘3减（3除3）

Answer 2

3(x)3(÷)3(÷)3=1
3(÷)3(+)3(÷)3=2
3(x)3(-)3(-)3=3
3(x)3(-)3(÷)3=8本回答被提问者采纳

Answer 3

3(÷)3(×)3(÷)3=1

3(+)[3(÷)3](－)3=2

]3(+)3(+)3](÷)3=3

3(×)3(－)[3(÷)3]=8

Answer 4

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