65-12= 27+11= 61+29= 92-42= 12+80=
33+57= 75-20= 35-11= 28+52= 96-16=
①62+35=
②89-34=
③17+79=
④46+27+18=
⑤85-58-14=
⑥71-65+34=
⑦97-36+33=
⑧86-85+99=
⑨63+37-55=