（ただし１と２を合せて１２のような使い方は出来ません。）
63個の解法が見つかりました。
(((5+8)÷1)-3)=10
((1×(5+8))-3)=10
((1×5)+(8-3))=10
((1×5)-(3-8))=10
((1×8)+(5-3))=10
((1×8)-(3-5))=10
((3×(1+5))-8)=10
((5×8)÷(1+3))=10
((5+(1×8))-3)=10
((5+(8-3))÷1)=10
((5+(8÷1))-3)=10
((5+8)-(1×3))=10
((5+8)-(3÷1))=10
((5-(3-8))÷1)=10
((5-3)+(1×8))=10
((5-3)+(8÷1))=10
((5÷1)+(8-3))=10
((5÷1)-(3-8))=10
((8+(1×5))-3)=10
((8+(5-3))÷1)=10
((8+(5÷1))-3)=10
((8-(3-5))÷1)=10
((8-3)+(1×5))=10
((8-3)+(5÷1))=10
((8÷1)+(5-3))=10
((8÷1)-(3-5))=10
(1×((5+8)-3))=10
(1×(5+(8-3)))=10
(1×(5-(3-8)))=10
(1×(8+(5-3)))=10
(1×(8-(3-5)))=10
(1+(3×(8-5)))=10
(1-(3×(5-8)))=10
(5×(8÷(1+3)))=10
(5+((1×8)-3))=10
(5+((8-3)÷1))=10
(5+((8÷1)-3))=10
(5+(1×(8-3)))=10
(5+(8-(1×3)))=10
(5+(8-(3÷1)))=10
(5-((1×3)-8))=10
(5-((3-8)÷1))=10
(5-((3÷1)-8))=10
(5-(1×(3-8)))=10
(5-(3-(1×8)))=10
(5-(3-(8÷1)))=10
(5÷((1+3)÷8))=10
(8×(5÷(1+3)))=10
(8+((1×5)-3))=10
(8+((1+5)÷3))=10
(8+((5-3)÷1))=10
(8+((5÷1)-3))=10
(8+(1×(5-3)))=10
(8+(5-(1×3)))=10
(8+(5-(3÷1)))=10
(8-((1×3)-5))=10
(8-((3-5)÷1))=10
(8-((3÷1)-5))=10
(8-(1×(3-5)))=10
(8-(3-(1×5)))=10
(8-(3-(5÷1)))=10
(8÷((1+3)÷5))=10