递等式计算,能简便的简便(要过程)

1个回答

  • (1)4.85+12.75÷1.7*2.6

    =4.85+7.5*2.6

    =4.85+19.5

    =24.35

    (2)18.32-9.47+11.68-10.53

    =18.32+11.68-(9.47+10.53)

    =30-20

    =10

    (3)(284+486)÷(9.1-7.56)

    =770÷1.54

    =500

    (4)36*(5/12+3/4-1/6-4/9)

    =36*5/12+36*3/4-36*1/6-36*4/9

    =15+27-6-16

    =20

    (5)7.4*3/8-37.5%+9.6÷(8/3)

    =(7.4+9.6)*3/8-0.375

    =17*3/8-0.375

    =6.375-0.375

    =6

    (6)14/15÷【18+(5/6-5/8)*48】

    =14/15÷(18+40-30)

    =14/15÷28

    =1/30