用递等式计算,能简算的要简算 ( 4 17 + 1 25 )×17×25 8.1÷〔( 4 1 7 -0.005×700

1个回答

  • (1)(

    4

    17 +

    1

    25 )×17×25,

    =(

    4

    17 +

    1

    25 )×(17×25),

    =(

    4

    17 ×17×25)+(

    1

    25 ×25×17),

    =(4×25)+(1×17),

    =100+17,

    =117;

    (2)8.1÷[( 4

    1

    7 -0.005×700)÷ 1

    2

    7 +3],

    =8.1÷[( 4

    1

    7 -3.5)÷ 1

    2

    7 +3],

    =8.1÷[

    9

    14 ÷ 1

    2

    7 +3],

    =8.1÷[

    1

    2 +3],

    =8.1÷3

    1

    2 ,

    =

    81

    35 ;

    (3)1234÷ 1234

    1234

    1235 ,

    =1234÷

    1234×1235+1234

    1235 ,

    =1234÷

    1234×(1235+1)

    1235 ,

    =1234÷

    1234×1236

    1235 ,

    =1234×

    1235

    1234×1236 ,

    =

    1235

    1236 ;

    (4)9999×2222+3334×3333,

    =3333×6666+3334×3333,

    =3333×(6666+3334),

    =3333×10000,

    =33330000.