计算下面各题,怎样算简便就怎样算.

1个回答

  • (1)

    5

    6 +

    3

    11 +

    5

    11 +

    1

    6

    = (

    5

    6 +

    1

    6 )+(

    3

    11 +

    5

    11 ) ,

    =1+

    8

    11 ,

    = 1

    8

    11 ;

    (2)

    6

    7 +

    1

    4 -

    9

    14

    =

    24

    28 +

    7

    28 -

    18

    28 ,

    =

    13

    28 ;

    (3)51.27-8.66-1.34

    =51.27-(8.66+1.34),

    =51.27-10,

    =41.27;

    (4)32.5÷(0.05×50)

    =32.5÷

    5

    2 ,

    =

    65

    2 ×

    2

    5 ,

    =13;

    (5)

    1

    2 +

    1

    6 +

    1

    12 +

    1

    20

    = (

    6

    12 +

    2

    12 +

    1

    12 )+

    1

    20 ,

    =

    3

    4 +

    1

    20 ,

    =

    4

    5 ;

    (6)

    4

    5 -(

    2

    3 -

    1

    2 )

    =

    4

    5 -

    1

    6 ,

    =

    19

    30 .