⒈ 80000
⒉ 3500000
⒊ 2340000
⒋ 640000
59×203≈
399÷41≈
629÷73≈
71×69≈
①380×25=
②945÷27=
③608×74=
④705÷85=
⑤63×253=
⑥730÷36=