怎样简便计算69×55 +67×45?

2024-11-16 05:26:45
推荐回答(2个)
回答(1):

69×55 +67×45
=(67+2)×55+67×45
=67×55+2×55+67×45
=67×(45+55)+2×55
=67×100+110
=6700+110
=6810

回答(2):

55×32+55×67+55
=55x(32+67+1)
=55x100
=5500