5.67*0.21-0.62怎样简便运算

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5.67*0.21-0.62怎样简便运算

5.67*0.21-0.62怎样简便运算
5.67*0.21-0.62怎样简便运算

5.67*0.21-0.62怎样简便运算
5.67*0.21-0.62
=5.67*(0.2+0.01)-0.62
=5.67*0.2+5.67*0.01-0.62
=1.134+0.0567-0.62
=1.13+0.004+0.05+0.0067-0.62
=1.18-0.62+0.0107
=0.56+0.0107
=0.5707