asked in 科學及數學數學 · 1 decade ago

數學(小數四則)(要直式)

1.0.54x65÷(054-0.15) 直式

20×2÷(19.5+7.5)

Update:

0.54X65÷(0.54-0.15)

2 Answers

Rating
  • 1 decade ago
    Favorite Answer

    1). 0.54x65÷(054-0.15)

    =35.1÷(0.54-0.15)

    =35.1÷0.39

    =90

    2.)20×2÷(19.5+7.5)

    =40÷27

    . . .

    =1.481 (循環小數)

    2008-10-03 17:58:03 補充:

    第2題應該係咁:

    2.)20×2÷(19.5+7.5)

    =40÷27

    . . .

    =1.481 (循環小數)

    2008-10-03 17:59:00 補充:

    d小數點係481上面.

    唔知點解整唔到.

    SOR!!!

    Source(s): 自已計
  • 1 decade ago

    1.0.54x65÷(0.54-0.15) 直式

    =35.1÷0.39

    =90

    20×2÷(19.5+7.5)

    =40÷27

    =1.48

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