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数学
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简算:9999+999+99+9=______.
人气:135 ℃ 时间:2020-03-22 12:09:23
解答
9999+999+99+9
=(9999+1)+(999+1)+(99+1)+(9+1)-4
=(10000+1000+100+10)-4
=11110-4
=11106
故答案为:11106.
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