105+4 9-24+4 5-48-7
3+36-1 3+6-45+4-3
☆☆☆☆☆
3+5= 6-6= 9-4= 8-5= 9-2=
5+2= 8-2= 3+4= 8-7= 6+4=
3+( )=7 9-( )=7 ( )+4=4 ( )-2=2
2+5+3= 2+6-0= 10-4-4=
6+1-3= 2+8-9= 1+8-7-=