
123×235-24×235 35,怎么用简便方法算用竖式?
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123×235-24×235 +35
=123×235-24×235 +235-200
=(123-24+1)x235-200
=100x235-200
=23500-200
=23300
=123×235-24×235 +235-200
=(123-24+1)x235-200
=100x235-200
=23500-200
=23300
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