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60又2/3乘以59又1/3 简便计算!
人气:176 ℃ 时间:2020-06-09 21:33:56
解答
(60+2/3)*(59+1/3)
=(60+2/3)*(60-2/3)
=60^2-(2/3)^2
=3600-4/9
=3599+1-4/9
=3599+5/9
=3599又5/9
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