计算下面各题.(能简算的要简算)

1个回答

  • (1)10-

    2

    3 ×

    9

    10 ,

    =10-

    3

    5 ,

    =9

    2

    5 ;

    (2)(

    1

    9 +

    1

    6 )×

    8

    25 ,

    =

    5

    18 ×

    8

    25 ,

    =

    4

    45 ;

    (3)

    5

    9 ×

    6

    25 ×

    3

    8 =

    1

    20 ;

    (4)(

    1

    4 +

    1

    8 )×24,

    =

    1

    4 ×24+

    1

    8 ×24,

    =6+3,

    =9;

    (5)

    7

    5 ×

    6

    5 ×

    11

    2 ×

    10

    11 =8

    2

    5 ; (6)5×

    5

    7 +

    2

    7 ×2,

    =

    25

    7 +

    4

    7 ,

    =4

    1

    7 ;

    (7)

    14

    5 ×

    3

    2 +

    14

    5 ×

    7

    2 ,

    =

    14

    5 ×(

    3

    2 +

    7

    2 ),

    =

    14

    5 ×5,

    =14;

    (8)16×

    2

    3 ×(9×

    1

    2 ),

    =16×

    2

    3 ×9×

    1

    2 ,

    =48.