（ただし１と２を合せて１２のような使い方は出来ません。）
71個の解法が見つかりました。
(((7+8)-5)-0)=10
((0+(7+8))-5)=10
((0+7)+(8-5))=10
((0+7)-(5-8))=10
((0+8)+(7-5))=10
((0+8)-(5-7))=10
((0-5)+(7+8))=10
((7+(0+8))-5)=10
((7+(8-0))-5)=10
((7+(8-5))-0)=10
((7+8)+(0-5))=10
((7+8)-(0+5))=10
((7+8)-(5-0))=10
((7-(0-8))-5)=10
((7-(5-8))-0)=10
((7-0)+(8-5))=10
((7-0)-(5-8))=10
((7-5)+(0+8))=10
((7-5)+(8-0))=10
((7-5)-(0-8))=10
((8+(0+7))-5)=10
((8+(7-0))-5)=10
((8+(7-5))-0)=10
((8-(0-7))-5)=10
((8-(5-7))-0)=10
((8-0)+(7-5))=10
((8-0)-(5-7))=10
((8-5)+(0+7))=10
((8-5)+(7-0))=10
((8-5)-(0-7))=10
(0+((7+8)-5))=10
(0+(7+(8-5)))=10
(0+(7-(5-8)))=10
(0+(8+(7-5)))=10
(0+(8-(5-7)))=10
(0-((5-7)-8))=10
(0-((5-8)-7))=10
(0-(5-(7+8)))=10
(7+((0+8)-5))=10
(7+((8-0)-5))=10
(7+((8-5)-0))=10
(7+(0+(8-5)))=10
(7+(0-(5-8)))=10
(7+(8+(0-5)))=10
(7+(8-(0+5)))=10
(7+(8-(5-0)))=10
(7-((0+5)-8))=10
(7-((5-0)-8))=10
(7-((5-8)-0))=10
(7-(0+(5-8)))=10
(7-(0-(8-5)))=10
(7-(5+(0-8)))=10
(7-(5-(0+8)))=10
(7-(5-(8-0)))=10
(8+((0+7)-5))=10
(8+((7-0)-5))=10
(8+((7-5)-0))=10
(8+(0+(7-5)))=10
(8+(0-(5-7)))=10
(8+(7+(0-5)))=10
(8+(7-(0+5)))=10
(8+(7-(5-0)))=10
(8-((0+5)-7))=10
(8-((5-0)-7))=10
(8-((5-7)-0))=10
(8-(0+(5-7)))=10
(8-(0-(7-5)))=10
(8-(5+(0-7)))=10
(8-(5-(0+7)))=10
(8-(5-(7-0)))=10