(5 +5) /5 -5/ 5 =1
(5 +5 )/5 -(5 -5) =2或(5 +5 )/5 +(5 -5) =2
(5 +5 )/5 +(5 /5) =3
5+ 5 -5-5/ 5 =4
5+ 5- 5 -(5- 5) =5或5+ 5- 5 +(5- 5) =5
5 +5- 5+ 5/ 5 =6
(5 /5)+( 5 /5 )+5 =7
(5 +5 )-(5 +5)/ 5 =8
(5 +5) /5 -5/ 5 =1
(5 +5 )/5 -(5 -5) =2或(5 +5 )/5 +(5 -5) =2
(5 +5 )/5 +(5 /5) =3
5+ 5 -5-5/ 5 =4
5+ 5- 5 -(5- 5) =5或5+ 5- 5 +(5- 5) =5
5 +5- 5+ 5/ 5 =6
(5 /5)+( 5 /5 )+5 =7
(5 +5 )-(5 +5)/ 5 =8