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1、0.64*7.2+3.6*2.72
2、0.78*0.45*0.1/7.8/0.045
人气:261 ℃ 时间:2020-04-06 12:02:16
解答
1、0.64*7.2+3.6*2.72
=0.64*2*3.6+3.6*2.72
=3.6*(1.28+2.72)
=3.6*4
=14.4
2、0.78*0.45*0.1/7.8/0.045
=7.8*0.045*0.1/(7.8*0.045)
=0.1
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