=108÷9
=12( )
=86+120
=206( )
302+303+304+305+306
=( )×( )
=( )
①350÷(91-86)
②189+386+269
③(75-69)×70
④802-136+244
⑤60+40×7
⑥1000-654-217
375-298+125 1000-257-243 723+215-223