104×12减21×4的简便算法怎么算
104Ã12å21Ã4çç®ä¾¿ç®æ³æä¹ç®
104Ã12å21Ã4
=104*12-3*4*7
=12*ï¼104-7ï¼
=12*ï¼100-3ï¼
=12*100-12*3
=1200-36
=1164
104Ã12å21Ã4
=104*12-3*4*7
=12*ï¼104-7ï¼
=12*ï¼100-3ï¼
=12*100-12*3
=1200-36
=1164
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