Question

35.6×45.6+4.56×638+0.456x100怎么巧算？

Answer 1

35.6×45.6+4.56×638+0.456×100

=35.6×45.6+45.6×63.8+45.6×1

=(35.6+63.8+1)×45.6

=100.4×45.6

=4578.24

Answer 2

首先45.6=4.56x10 0.456=4.56/100
所以原式子可变为：
35.6x4.56x10+4.56x638+4.56/100x100
化简后得356x4.56+638x4.56+4.56
即可以得到（356+638+1）x4.56
得到答案为：4537.2