數學(小數四則)(要直式)

Question

1.0.54x65÷(054-0.15) 直式

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20×2÷(19.5+7.5)

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Update:

0.54X65÷(0.54-0.15)

Answer 1

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

Answer 2

1.0.54x65÷(0.54-0.15) 直式

＝35.1÷0.39

＝90

20×2÷(19.5+7.5)

＝40÷27

＝1.48