35×35-45+66×45简便计算
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![35×35-45+66×45简便计算](/uploads/image/z/1264369-49-9.jpg?t=35%C3%9735-45%2B66%C3%9745%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97)
35×35-45+66×45简便计算
35×35-45+66×45简便计算
35×35-45+66×45简便计算
题不对吧.是35*35还是35*45
35×45-45+66×45
=45×(35-1+66)
=45×100
=4500
=35X(45-10)-45+66X45
=35X45-350-45+66X45
=45X(35-1+66)-350
=4500-350
=4150