70-50= 7+32= 58-50= 47-4=
81+15= 94-40= 85-31= 8+23=
60-16= 65-25= 90-19= 34-26=
①58-29=
②68+28=
③47+22=
④76-27=
⑤39+54=
64+18= 76-15= 36+54=