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六年级简便计算题简便计算(70+1/68)*1/69
人气:456 ℃ 时间:2025-06-15 14:17:34
解答

(70+1/68)*1/69
=(69+1+1/68)*1/69
=(69+69/68)*1/69
=69*1/69+69/68*1/69
=1+1/68
=69/68

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