递等式计算: 420÷60×154= 774÷(27+16)= (45-26)×33= 230-735÷35= 148-

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  • 解题思路:(1)按照从左到右的顺序计算;

    (2)先算小括号里面的加法,再算括号外的除法;

    (3)先算小括号里面的减法,再算括号外的乘法;

    (4)先算除法,再算减法;

    (5)先算乘法,再算减法;

    (6)先算小括号里面的加法,再算括号外的减法.

    (1)420÷60×154,

    =7×154,

    =1078;

    (2)774÷(27+16),

    =774÷43,

    =18;

    (3)(45-26)×33,

    =19×33,

    =627;

    (4)230-735÷35,

    =230-21,

    =209;

    (5)148-48×2,

    =148-96,

    =52;

    (6)181-(109+43),

    =181-152,

    =29.

    点评:

    本题考点: 整数四则混合运算.

    考点点评: 解决本题先理清楚运算顺序,然后根据运算顺序逐步求解即可.