55×25+25×49用脱式怎么算?

2024-11-29 21:49:02
推荐回答(1个)
回答1:

55×25+25×49用脱式怎么算?
解:55×25+25×49
=25x(55+49)
=25x104
=25x(100+4)
=2500+100
=2600