①328-165-35
②216+188+84
③306-197
④40×(145-115)
⑤355÷(103-98)
⑥246+38-46
①40×300=②540÷ 90=③159-74-26=④930÷30=
⑤120×60=⑥422÷71≈⑦218+82×0=⑧50×2÷50×2=
308×48= 567×34=
945÷35= 902÷49=
①456-298
②679+204
③423-175+277-225
④873-48-152
⑤684-(432+184)
⑥348-158+52
2+4+6+8+……+96+98+ 100