5436*5438-5435*5439怎么算(一定要简算,)
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5436*5438-5435*5439怎么算(一定要简算,)
5436*5438-5435*5439怎么算(一定要简算,)
5436*5438-5435*5439怎么算(一定要简算,)
5436*5438-5435*5439
=5438*5436-5439*5435
=5439*5436-5436-5439*5435
=5439*(5436-5435)-5436
=5439*1-5436
=5439-5436
=3
5436*5438-5435*5439
=(5436*5438)-(5435*5439)
=29560968-29560965
=3
5436*5438-5435*5439
=5435*5439-5435+5439-1-5435*5439
=3
简单:
5436*5438-5435*5439
=5435*5439-5435+5439-1-5435*5439
=3
5436*5438-5435*5439
=(5435+1)*5438-5435*(5438+1)
=5438-5435
=3
5436×5438-5435×5439
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