444×333+999×222+555×666简便运算怎么算
3个回答
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=(999-555)*333+999*222+555*666
=999*333-555*333+999*222+555*666
=999*(333+222)-555*333+555*666
=999*555+555*(666-333)
=999*555+555*333
=1000*555-555+555*333
=555000+555*332
=555000+500*332+55*332
=555000+166000+50*332+5*332
=555000+166000+16600+1660
=739260
=999*333-555*333+999*222+555*666
=999*(333+222)-555*333+555*666
=999*555+555*(666-333)
=999*555+555*333
=1000*555-555+555*333
=555000+555*332
=555000+500*332+55*332
=555000+166000+50*332+5*332
=555000+166000+16600+1660
=739260
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