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  • 脫式計(jì)算.(能簡算的要簡算) 7.02×1.02 1.125÷0.09 2001×0.54+2001×0.46 0.64×0.25+0.75 0.78÷26+0.5×0.02 [2.8-2.8×(2.8-2.8)]÷0.7 8×[1÷(3.

    脫式計(jì)算.(能簡算的要簡算)
    7.02×1.02

    1.125÷0.09
    2001×0.54+2001×0.460.64×0.25+0.75
    0.78÷26+0.5×0.02[2.8-2.8×(2.8-2.8)]÷0.7
    8×[1÷(3.2-2.95)]33.4-26.465÷(2.6+4.1)
    數(shù)學(xué)人氣:862 ℃時(shí)間:2020-06-17 05:37:15
    優(yōu)質(zhì)解答
    (1)7.02×1.02,
    =7.02×(1+0.02),
    =7.02+7.02×0.02,
    =7.02+0.1404,
    =7.1604;
    (2)1.125÷0.09,
    =112.5÷9,
    =12.5;
    (3)2001×0.54+2001×0.46,
    =2001×(0.54+0.46),
    =2001×1,
    =2001;
    (4)0.64×0.25+0.75,
    =0.16+0.75,
    =0.91;
    (5)[2.8-2.8×(2.8-2.8)]÷0.7,
    =[2.8-2.8×0]÷0.7,
    =2.8÷0.7,
    =4;
    (6)0.78÷26+0.5×0.02,
    =0.03+0.01,
    =0.04;
    (7)8×[1÷(3.2-2.95)],
    =8×[1÷0.25],
    =8×4,
    =32;
    (8)33.4-26.465÷(2.6+4.1),
    =33.4-26.465÷6.7,
    =33.4-3.95,
    =29.45.
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