12.3乘以556加24.6乘以222用递等式简便方法计算

2024-11-22 07:22:21
推荐回答(2个)
回答(1):

8465656/45484854-545
=974564-545
=54547

回答(2):

12.3×556+24.6×222
=(556+444)×12.3
=12300