（ただし１と２を合せて１２のような使い方は出来ません。）
108個の解法が見つかりました。
(((5×8)÷4)÷1)=10
((1×(5×8))÷4)=10
((1×5)×(8÷4))=10
((1×5)÷(4÷8))=10
((1×8)×(5÷4))=10
((1×8)÷(4÷5))=10
((1+(5+8))-4)=10
((1+5)+(8-4))=10
((1+5)-(4-8))=10
((1+8)+(5-4))=10
((1+8)-(4-5))=10
((1-4)+(5+8))=10
((1÷4)×(5×8))=10
((5×(1×8))÷4)=10
((5×(8÷1))÷4)=10
((5×(8÷4))÷1)=10
((5×8)×(1÷4))=10
((5×8)÷(1×4))=10
((5×8)÷(4÷1))=10
((5+(1+8))-4)=10
((5+8)+(1-4))=10
((5+8)-(4-1))=10
((5-4)+(1+8))=10
((5÷(1÷8))÷4)=10
((5÷(4÷8))÷1)=10
((5÷1)×(8÷4))=10
((5÷1)÷(4÷8))=10
((5÷4)×(1×8))=10
((5÷4)×(8÷1))=10
((5÷4)÷(1÷8))=10
((8×(1×5))÷4)=10
((8×(5÷1))÷4)=10
((8×(5÷4))÷1)=10
((8+(1+5))-4)=10
((8-4)+(1+5))=10
((8÷(1÷5))÷4)=10
((8÷(4÷5))÷1)=10
((8÷1)×(5÷4))=10
((8÷1)÷(4÷5))=10
((8÷4)×(1×5))=10
((8÷4)×(5÷1))=10
((8÷4)÷(1÷5))=10
(1×((5×8)÷4))=10
(1×(5×(8÷4)))=10
(1×(5÷(4÷8)))=10
(1×(8×(5÷4)))=10
(1×(8÷(4÷5)))=10
(1+((5+8)-4))=10
(1+(5+(8-4)))=10
(1+(5-(4-8)))=10
(1+(8+(5-4)))=10
(1+(8-(4-5)))=10
(1-((4-5)-8))=10
(1-((4-8)-5))=10
(1-(4-(5+8)))=10
(1÷((4÷5)÷8))=10
(1÷((4÷8)÷5))=10
(1÷(4÷(5×8)))=10
(5×((1×8)÷4))=10
(5×((8÷1)÷4))=10
(5×((8÷4)÷1))=10
(5×(1×(8÷4)))=10
(5×(1÷(4÷8)))=10
(5×(8×(1÷4)))=10
(5×(8÷(1×4)))=10
(5×(8÷(4÷1)))=10
(5+((1+8)-4))=10
(5+(1+(8-4)))=10
(5+(1-(4-8)))=10
(5+(8+(1-4)))=10
(5+(8-(4-1)))=10
(5-((4-1)-8))=10
(5-((4-8)-1))=10
(5-(4-(1+8)))=10
(5÷((1×4)÷8))=10
(5÷((4÷1)÷8))=10
(5÷((4÷8)÷1))=10
(5÷(1×(4÷8)))=10
(5÷(1-(4÷8)))=10
(5÷(1÷(8÷4)))=10
(5÷(4×(1÷8)))=10
(5÷(4÷(1×8)))=10
(5÷(4÷(8÷1)))=10
(8×((1×5)÷4))=10
(8×((5÷1)÷4))=10
(8×((5÷4)÷1))=10
(8×(1×(5÷4)))=10
(8×(1÷(4÷5)))=10
(8×(5×(1÷4)))=10
(8×(5÷(1×4)))=10
(8×(5÷(4÷1)))=10
(8+((1+5)-4))=10
(8+(1+(5-4)))=10
(8+(1-(4-5)))=10
(8+(5+(1-4)))=10
(8+(5-(4-1)))=10
(8-((4-1)-5))=10
(8-((4-5)-1))=10
(8-(4-(1+5)))=10
(8÷((1×4)÷5))=10
(8÷((4÷1)÷5))=10
(8÷((4÷5)÷1))=10
(8÷(1×(4÷5)))=10
(8÷(1÷(5÷4)))=10
(8÷(4×(1÷5)))=10
(8÷(4÷(1×5)))=10
(8÷(4÷(5÷1)))=10