278乘以135-278乘以35简便计算

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278乘以135-278乘以35简便计算
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278乘以135-278乘以35简便计算
278乘以135-278乘以35简便计算

278乘以135-278乘以35简便计算
278乘以135-278乘以35
=278×(135-35)
=278×100
=27800

=275×(135-35)
=275×100
=27500

278×(135-35)=278×100=27800