①872+98=
②☆408+254=
③162+68=
④592-138=
⑤☆306-227=
⑥542-58=
①78÷6=
②98÷4=
③*696÷4=
④786÷7=
⑤945÷3=
⑥*728÷6=
①153×3=
②207×6=
③840×3=
④568×5=
⑤99÷7=
⑥*937÷3=
验算: