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54×20分之1+45÷20+20分之1 (如何简便计算)
人气:359 ℃ 时间:2020-03-31 15:09:03
解答
54×20分之1+45÷20+20分之1
=54*(1/20)+45*(1/20)+1/20
=(54+45+1)*(1/20)
=100*(1/20)
=5
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