67÷8= 56÷9= 60÷7= 90﹣65﹣14=
60÷7= 54÷9= 33+47-38= 934-(86+14)=
验算:
①90﹣46=
②46+27=
③83﹣27=
④76﹣17+13=
⑤87+5﹣9=
⑥90﹣(58+13)=