下面各题怎样简便怎样算.①10944÷36×25-758②132.5-18÷7.5+7.6③1.55× 3 22 - 3
下面各题怎样简便怎样算.①10944÷36×25-758②132.5-18÷7.5+7.6③1.55×322-322×920④(12×56-7.3)÷94⑤35÷[78-...
下面各题怎样简便怎样算.①10944÷36×25-758②132.5-18÷7.5+7.6③1.55× 3 22 - 3 22 × 9 20 ④(12× 5 6 -7.3)÷ 9 4 ⑤ 3 5 ÷[ 7 8 -( 2 5 + 3 8 )].
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鶘鎖0036惪
2014-09-07
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①10944÷36×25-758, =304×25-758, =7600-758, =6842;
②132.5-18÷7.5+7.6, =132.5-2.4+7.6, =137.7;
③1.55× - × , = ×(1.55- ), = ×(1.55-0.45), = ×1.1, = ;
④(12× -7.3)÷ , =(10-7.3)÷ , =2.7× , =1.2;
⑤ ÷[ -( + )], = ÷[ - - ], = ÷[ - ], = ÷ , = ×10, =6. |
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