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分數(shù)乘除法簡便運算100題有答案資料50444(文件)

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【正文】 =5(12) + = (12)101 =70 (14) —=0 (14) 99 + =60 (16) ( + )7 9=92 (16)325=95 (17) 36 (18) ( )=1 =(35+1) = 34(19)26 (20)32 =(25+) =(30+) =5 =27 (21) = (22) =7 (23)= (24)=5 (25) =12 (26)= (27) =0 (28) =37 (29) 247。= (52)18(+)=23(53)7+5 =8 (54)(-)(24-)=1(55)(+)247。+=103 (63) ++=(64) =20 (65) =0(67) (21+21) = (67)(99+)247。 = (74) 247。()] =(78) (+)1511 =67 (79)=3(80) 46=44 (81) 2008=2006 (82) = (83) + =(84)36= (85)-= (86) 101 =28
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