计算(1) 3.41÷2 15 16 ×5.875-(21 5 37 -19.18) (2) [(13.75-7 11 12
计算(1)3.41÷21516×5.875-(21537-19.18)(2)[(13.75-71112)×2313]÷[(1112+12.5%)÷(247÷9313)]....
计算(1) 3.41÷2 15 16 ×5.875-(21 5 37 -19.18) (2) [(13.75-7 11 12 )×2 3 13 ]÷[(1 1 12 +12.5%)÷(2 4 7 ÷9 3 13 )] .
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潭若云0eM
2014-11-22
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(1) 3.41÷2 ×5.875-(21 -19.18) = × × -(21 -19 ), =6 +19 -21 , =26-21 , =4 ;
(2) [(13.75-7 )×2 ]÷[(1 +12.5%)÷(2 ÷9 )] =[(13 -7 )× ]÷[(1 + )÷( × )], =[ × ]÷[ ÷ ], = × × × , =3. |
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