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3.64*0.84+0.636*8.4简便运算
人气:202 ℃ 时间:2020-05-10 14:07:15
解答
3.64*0.84+0.636*8.4
=0.364*10*0.84+0.636*8.4
=0.364*8.4+0.636*8.4
=(0.364+0.636)*8.4
=1*8.4
=8.4
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