想一想,怎样计算2.87*263 73.7*28.
问题描述:
想一想,怎样计算2.87*263 73.7*28.
答
2.87*263+73.7*28.7
=2.87*263+737*2.87
=2.87*(263+737)
=2.87*1000
=2870