⑴72×4=
⑵95﹣57=
⑶〇518+339=
⑷280×8=
⑸207×5=
⑹〇673﹣456=
①670-395=
②*600-253-127= 验算:
③635-(329+135)=
④238+421+147=
①969×7=
②5×407=
③290×4=
④94÷3=
⑤※639÷3=
⑥※487÷4=