345*98 简便计算
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345*98 简便计算
345*98 简便计算
345*98 简便计算
原式=345*(100-2)
=345*100-345*2
=34500-690
=33810
=345*(100-2)
=345*100-345*2
=34500-690
=33810
345*98 简便计算
345*98 简便计算
345*98 简便计算
原式=345*(100-2)
=345*100-345*2
=34500-690
=33810
=345*(100-2)
=345*100-345*2
=34500-690
=33810