0.56乘40.5加4.4乘405用简便方法

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0.56乘40.5加4.4乘405用简便方法0.56乘40.5加4.4乘405用简便方法0.56乘40.5加4.4乘405用简便方法0.56×40.5+4.4×405=0.56×40.5+44×40.

0.56乘40.5加4.4乘405用简便方法
0.56乘40.5加4.4乘405用简便方法

0.56乘40.5加4.4乘405用简便方法
0.56×40.5+4.4×405
=0.56×40.5+44×40.5
=(0.56+44)×40.5
=