如题所述
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第1个回答 2015-12-07
简便运算:
530×54+540×77
=53×540+540×77
=540×(53+77)
=540×130
=(50+4)×1300
=50×1300+4×1300
=65 000+5 200
=70200
530×54+540×77
=53×540+540×77
=540×(53+77)
=540×130
=(50+4)×1300
=50×1300+4×1300
=65 000+5 200
=70200