①286+54=
②657-312=
③*367+533=
④880-407=
⑤304-195=
⑥*634-182=
⑦325+256-127=
⑧850-(365+248)=
⑨1000-324-275=
①142×4=
②2800×3=
③304×7=
④☆385+559=
⑤☆708-274=