简便运算:187×45-87×45?

2024-11-17 02:28:34
推荐回答(3个)
回答1:

187*45-87*45=4500

187*45=8415

87*45=3915

回答2:

187×45-87×45
=(187-87)×45
=100×45
=4500

回答3:

45(187-87)=45*100=4500