(72+23)乘以（85-27）怎样简便怎样算 - 知识问答

(72+23)乘以（85-27）怎样简便怎样算

1个回答

(72+23)×(85-27)
= 95×(85-25-2)
= (100-5)×(60-2)
= 100×60 - 2×100 - 5×60 + 5×2
= 6000 - 200 - 300 + 10
= 6000 - 500 + 10
= 5510

相关问题