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数学
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0.79*0.46+7.9*0.24+11.4*0.079怎样简算
人气:203 ℃ 时间:2019-09-17 05:14:07
解答
0.79×0.46+7.9×0.24+11.4×0.079
=0.79×0.46+0.79×2.4+11.4×0.79
=0.79×(0.46+2.4+1.14)
=0.79×4
=3.16
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