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  • 用簡便方法計(jì)算下面各題. 4.37×0.55+56.3×0.055; 2.5×1.6×1.25; 0.59×9.8; 53.6×38.2+536×6.08+53.6.

    用簡便方法計(jì)算下面各題.
    4.37×0.55+56.3×0.055;
    2.5×1.6×1.25;
    0.59×9.8;
    53.6×38.2+536×6.08+53.6.
    數(shù)學(xué)人氣:235 ℃時(shí)間:2019-08-19 16:14:47
    優(yōu)質(zhì)解答
    (1)4.37×0.55+56.3×0.055
    =43.7×0.055+56.3×0.055
    =(43.7+56.3)×0.055
    =100×0.055
    =5.5
    (2)2.5×1.6×1.25
    =2.5×2×0.8×1.25
    =(2.5×2)×(0.8×1.25)
    =5×1
    =5
    (3)0.59×9.8
    =0.59×(10-0.2)
    =0.59×10-0.59×0.2
    =5.9-0.118
    =5.782
    (4)53.6×38.2+536×6.08+53.6
    =53.6×38.2+53.6×60.8+53.6
    =53.6×(38.2+60.8+1)
    =53.6×100
    =5360
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