2.005×390+20.05×41+200.5×2=
网友回答
2.005×390+20.05×41+200.5×2
=20.05×39+20.05×41+20.05×20
=20.05×(39+41+20)
=20.05×100
=2005.
======以下答案可供参考======
供参考答案1:
2.005×390+20.05×41+200.5×2=2.005×(390+410+200)=2005
供参考答案2:
20.05x39+20.05x41+20.05x20=20.05x(39+41+20)=20.05x100=2005
供参考答案3:
=20.05*(39+41+20)=20.05*100=2005