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数学提问五年级上册智慧冲浪2.25*0.16+264*0.225+5.2*2.25+0.225*20=?
人气:130 ℃ 时间:2020-05-16 17:05:36
解答
原式=2.25*0.16+2.25*26.4+2.25*5.2+2.25*2
=2.25*(0.16+26.4+5.2+2)
=2.25*33.76
=4.5*16.88
=9*8.44
=75.96
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