递等式计算(能简便的要简便计算):

1个回答

  • (1)6.01-1.9+4.99-2.1,

    =(6.01+4.99)-(1.9+2.1),

    =11-4,

    =7;

    (2)0.25×32×12.5,

    =(0.25×4)×(8×12.5),

    =1×100,

    =100;

    (3)0.65×64-65×0.54,

    =0.65×64-0.65×54,

    =0.65×(64-54),

    =0.65×10,

    =6.5;

    (4)90÷(3.6-1.8),

    =90÷1.8,

    =50;

    (5)52+6.5+26×0.37,

    =58.5+9.62,

    =68.12;

    (6)0.36÷[(6.1-4.6)×O.8],

    =0.36÷[1.5×O.8],

    =0.36÷1.2,

    =0.3.