①36+47=
②45+19+27=
③75-28-19=
④61-37=
⑤70-37+28=
⑥38-(50-47)=
①8+49=
②92-48=
③78+16=
④27+25-19=
⑤86-(24+26)=
⑥38+30+27=
63+27=
80﹣17=
45﹣28=
85﹣17+25=
53﹣(24+18)=
67﹣28+11=