51+(2304-2042)*23怎么简便算呀?

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51+(2304-2042)*23怎么简便算呀?

51+(2304-2042)*23怎么简便算呀?
51+(2304-2042)*23怎么简便算呀?

51+(2304-2042)*23怎么简便算呀?
51+(2304-2042)*23=51+(2000+304-2000-42)*23
=51+(304-42)*23
=51+(302-42+2)*23
=51+(260+2)*23
=51+(200+60+2)*23
=51+200*23+60*23+2*23
=51+4600+1380+46
=(51+46)+(4600+1380)
=97+5980
=100-3+5980
=(5980+100)-3
=6080-3
=6077