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①※876+214=
②※503-267=
③667×8=
④709×5=
①142×4=
②2800×3=
③304×7=
④☆385+559=
⑤☆708-274=
①198×8≈
②495+301≈
③503+301≈
④796×4≈
⑤208×5≈
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