怎样简便计算:201×59+240×41+39×9
问题描述:
怎样简便计算:201×59+240×41+39×9
答
201×59+240×41+39×9
=(240-39)×59+240×41+39×9
=240×59+240×41-39×59+39×9
=240×(59+41)-39×(59-9)
=240×100-39×50
=24000-1950
=22050