用简便方法计算50x(60+8),93x99+93,35X(20-4),101x45,103x24,152X49+51X152,350除5除2
50x(60+8)
=50*60+50*8
=3000+400
=3400
93*99+93
=93*ï¼99+1ï¼
=93*100
=9300
=50*60+50*8
=3000+400
=3400
93*99+93
=93*ï¼99+1ï¼
=93*100
=9300
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