42道递等式计算六年级上册的 急 急,

1个回答

  • 450-450÷18×15

    3÷2.5+0.45×4.8

    4.2÷[2.5-0.4×(2 .8 -1.05)]

    205×4.4

    15 -5.375-4

    886%×2 +8.86×6.5+8.86

    3000-450×14÷18

    〔(8 —4.625)÷(2.4+1 )〕×50%

    25.5×(0.32÷0.4)+8.6

    6.8×4.5÷(3.2 - 2.95)

    (13.68 - 8.4×1.05) ÷0.36

    2.8×6.5÷(5.2- 4.95)

    21.6×(1.46÷0.2 - 6.7)

    45.55-(6.82+15.55) 34.52-17.87-12.23 6.43-(1.4-0.57)

    23.75-8.64-3.46 17.83-9.5-7.83-0.5 5.38+88.2-2.38+1.8

    27.38-5.34+2.62-4.66 21.63-(8.5+9.63) 7.5-2.45+7.5+2.45

    0.9+0.99+0.999 5.09-(0.09+1.23) 9.36-(4.36-3.5)

    9.9×99.9

    =(10-0.1)×99.9

    =999-9.99

    =989.01

    991%×5+9.91×91+0.991×40

    =(5+91+4)×9.91

    =991